Keep swimming through winter – Part 1

Keep swimming through winter – Part 1

Why would you want to swim through winter!?

Written by Chloe Rafferty, Director of Love SwimRun and STA Open Water Swimming Coach.

Early in November I went to visit a friend in Scotland for some van camping adventures. We were mainly intending to cycle, but we ended up swimming everyday, including some long sea swims. Usually by this time of year I’d be knocking back on my open water distance and just enjoy some cold water dips without a wetsuit, but I enjoyed our swims in the Firth of Forth so much I decided to keep on going.... and going! By the time I’d driven back to Wales I’d given myself the challenge to keep swimming, or at least dipping, every day until the end of January. I set a distance goal of 70km then as well, which in the summer or indoors would not be hard, but outdoors in sub 9 degree temperatures (and getting cooler), it was going to be hard.

I’ve been swimming through the winter for 10 years now but this is the first time I’ve given myself a challenge like this. I’m not exactly built for cold water challenges being quite tall and slim! Even in the summer I struggle with getting cold during longer open water swims.

I’d been wearing a Zone3 Vanquish, which is an amazing wetsuit but it wasn’t much help keeping me warm! I reached out to Zone3 for help and they agreed to send me their Thermal Aspire wetsuit. The suit, based on their award winning Aspire wetsuit, is designed with a Heat-Tech Fleece lining to keep you warmer for longer in cooler water. The thicker insulating panels maintain body heat around the key muscles and organs and it also features a higher neck line and longer arms and legs to increase warmth.

The Thermal Aspire has made a huge difference to my comfort levels and I’m really impressed with the performance and flexibility of the suit. With the addition of some other insulating accessories, this has been a game changer for my winter swimming and I now feel that I stand a good chance of achieving my distance goal!

Try it yourself

In case you fancy taking on a similar winter swimming challenge, or just want to get out and try some dips over New Year, I’ve put together some information, advice and a bit more detail about what I do myself to get you started safely.

‘Why would I want to torture myself in cold water?’ you may well ask! Well, there are a number of benefits to swimming through the winter.

The effects of cold swimming on mental health, anxiety and depression are well-documented and the opportunity to be outdoors and in nature throughout the whole year are worth the effort. Swimming, like all exercise, prompts your brain to release natural feel-good hormones called endorphins. Your nervous system produces endorphins to help you deal with stress, and these compounds can alleviate pain, increase positivity, and bring about a sense of wellbeing and happiness. Combine these feel-good endorphins with the restorative qualities of being in the nature and you can double the wellbeing effect. Research suggests that immersing yourself in natural water in the open air is particularly good for positive mental wellbeing.

There have been a number of studies of the effects of cold water on the immune system. These studies have shown successfully that cold water helps to boost the white blood cell count  (the cells of the immune system that are involved in protecting the body against both infection and disease) because the body is forced to react to changing conditions. Over time, your body becomes better at activating it’s defences. This means that taking cold dips could help build up resistance to illnesses like colds and the flu.

For triathletes and open water swimmers, there can be a great technical and tactical advantage to keep swimming outdoors through the winter. Not only does it give you extra opportunity to train but if you can arrive at your first early race of the season feeling very comfortable about the temperature of the water (in fact you’ll probably be thinking that it’s pretty warm if you’ve swam all winter), then you will have an advantage over all the other participants who have only been swimming in a pool. You will be able to focus purely on the swimming instead of the temperature.

Read part 2 - Acclimatising and understanding cold water.

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zone3official
18/06/25
What a weekend up at Windermere 💦⛰️ The Great North Swim brought big energy, beautiful scenery, and plenty of Zone3 kit in the water. We had an awesome crew of ambassadors taking on the 5km swim, shoutout to @livs_is_livs who did it in skins 👏 and to @chloedooley who showed up and gave it everything. And a massive congrats to Zone3 Pro @j0m3sf1 for taking the win in the SwimRun - absolutely flying out there, despite the weather warnings! Open water season is officially on, and we’re buzzing to be part of it. @great_swim
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zone3official
18/06/25
What a weekend up at Windermere 💦⛰️ The Great North Swim brought big energy, beautiful scenery, and plenty of Zone3 kit in the water. We had an awesome crew of ambassadors taking on the 5km swim, shoutout to @livs_is_livs who did it in skins 👏 and to @chloedooley who showed up and gave it everything. And a massive congrats to Zone3 Pro @j0m3sf1 for taking the win in the SwimRun - absolutely flying out there, despite the weather warnings! Open water season is officially on, and we’re buzzing to be part of it. @great_swim
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zone3official
18/06/25
What a weekend up at Windermere 💦⛰️ The Great North Swim brought big energy, beautiful scenery, and plenty of Zone3 kit in the water. We had an awesome crew of ambassadors taking on the 5km swim, shoutout to @livs_is_livs who did it in skins 👏 and to @chloedooley who showed up and gave it everything. And a massive congrats to Zone3 Pro @j0m3sf1 for taking the win in the SwimRun - absolutely flying out there, despite the weather warnings! Open water season is officially on, and we’re buzzing to be part of it. @great_swim
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zone3official
15/06/25
What a weekend at the Great North Swim in Windermere! As proud swim sponsors, we loved being part of the action. Even with the odd downpour, spirits stayed high and the atmosphere was electric - a true celebration of community, determination, and open water adventure.
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zone3official
10/06/25
This weekend, the Zone3 team also volunteered at the incredible 24-Hour Swim Relay at Shepperton @levelwateruk 🏊‍♀️ We're proud to support Level Water, a charity that gives children with disabilities the opportunity to learn to swim, offering 1-to-1 lessons that empower kids with confidence, movement, and freedom in the water. The 24 hour event brought swimmers together for a non-stop relay challenge, raising vital funds to provide these lessons across the UK. To everyone swimming, supporting, and staying awake through the night: thank you for making a difference. This is what sport is all about.
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zone3official
10/06/25
This weekend, the Zone3 team also volunteered at the incredible 24-Hour Swim Relay at Shepperton @levelwateruk 🏊‍♀️ We're proud to support Level Water, a charity that gives children with disabilities the opportunity to learn to swim, offering 1-to-1 lessons that empower kids with confidence, movement, and freedom in the water. The 24 hour event brought swimmers together for a non-stop relay challenge, raising vital funds to provide these lessons across the UK. To everyone swimming, supporting, and staying awake through the night: thank you for making a difference. This is what sport is all about.
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zone3official
10/06/25
This weekend, the Zone3 team also volunteered at the incredible 24-Hour Swim Relay at Shepperton @levelwateruk 🏊‍♀️ We're proud to support Level Water, a charity that gives children with disabilities the opportunity to learn to swim, offering 1-to-1 lessons that empower kids with confidence, movement, and freedom in the water. The 24 hour event brought swimmers together for a non-stop relay challenge, raising vital funds to provide these lessons across the UK. To everyone swimming, supporting, and staying awake through the night: thank you for making a difference. This is what sport is all about.
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zone3official
09/06/25
Blenheim Palace Triathlon delivered everything we love about race season - historic backdrops, electric energy, and a community of athletes pushing themselves to new limits 🏁 As Official Swim Sponsor, we were proud to support one of the UK’s most iconic triathlons. The Zone3 kit was out in force, powered by the passion of our ambassador team and the dedication of every single participant! 👉 Swipe to see our fave visitor of the weekend @blenheimpalacetriathlon
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zone3official
09/06/25
Blenheim Palace Triathlon delivered everything we love about race season - historic backdrops, electric energy, and a community of athletes pushing themselves to new limits 🏁 As Official Swim Sponsor, we were proud to support one of the UK’s most iconic triathlons. The Zone3 kit was out in force, powered by the passion of our ambassador team and the dedication of every single participant! 👉 Swipe to see our fave visitor of the weekend @blenheimpalacetriathlon
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zone3official
09/06/25
Blenheim Palace Triathlon delivered everything we love about race season - historic backdrops, electric energy, and a community of athletes pushing themselves to new limits 🏁 As Official Swim Sponsor, we were proud to support one of the UK’s most iconic triathlons. The Zone3 kit was out in force, powered by the passion of our ambassador team and the dedication of every single participant! 👉 Swipe to see our fave visitor of the weekend @blenheimpalacetriathlon
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zone3official
09/06/25
Blenheim Palace Triathlon delivered everything we love about race season - historic backdrops, electric energy, and a community of athletes pushing themselves to new limits 🏁 As Official Swim Sponsor, we were proud to support one of the UK’s most iconic triathlons. The Zone3 kit was out in force, powered by the passion of our ambassador team and the dedication of every single participant! 👉 Swipe to see our fave visitor of the weekend @blenheimpalacetriathlon
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zone3official
09/06/25
Blenheim Palace Triathlon delivered everything we love about race season - historic backdrops, electric energy, and a community of athletes pushing themselves to new limits 🏁 As Official Swim Sponsor, we were proud to support one of the UK’s most iconic triathlons. The Zone3 kit was out in force, powered by the passion of our ambassador team and the dedication of every single participant! 👉 Swipe to see our fave visitor of the weekend @blenheimpalacetriathlon
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zone3official
09/06/25
Blenheim Palace Triathlon delivered everything we love about race season - historic backdrops, electric energy, and a community of athletes pushing themselves to new limits 🏁 As Official Swim Sponsor, we were proud to support one of the UK’s most iconic triathlons. The Zone3 kit was out in force, powered by the passion of our ambassador team and the dedication of every single participant! 👉 Swipe to see our fave visitor of the weekend @blenheimpalacetriathlon
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zone3official
09/06/25
Blenheim Palace Triathlon 2025 brought together athletes, ambition, and the unmistakable energy of race season. 💥 As the Official Swim Sponsor, Zone3 was proud to support the event which included the British and English Sprint Distance Championships and GB Age-Group Team Qualifier. With athletes of every level pushing their limits and our ambassadors leading from the front, it was a weekend to remember. The rain came down, but the spirit? Unshakeable. The determination? Unstoppable. The atmosphere? Electric ⚡ From first-time triathletes to GB hopefuls, every stroke, step, and smile was a reminder of why we do this. Thanks to everyone who stopped by to chat! And huge kudos to everyone who raced! @blenheimpalacetriathlon
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zone3official
23/05/25
Planning a staycation with open-water swims on the agenda? Don’t hit the road without these 5 holiday essentials that blend performance, comfort, and innovation, whether you're taking the plunge or soaking in the scenery. 🧭 1. Zone3 Waterproof Phone Pouch Stay safe + snap the moment. This buoyant, watertight pouch keeps your phone sealed from the elements while floating beside you for easy access:GPS, safety calls or that post-swim selfie, sorted. 🏖 2. Swim Safety Buoy Not just for visibility, our buoys offer a float to grab hold of when you need a breather in the water, plus are in-water storage for your dry kit and valuables. They're lightweight, eco-conscious, and swimmer-approved for peace of mind. 🕶 3. Waterhaul x Zone3 Sunglasses Sustainably made from ocean plastic and engineered for active wear, these polarised shades reduce glare off the water and keep you looking sharp on swim breaks. 🫖 4. Zone3 Ocean Bottle Hydration with a mission. This vacuum-insulated bottle keeps drinks cold (or hot) and supports ocean cleanup with every purchase. Perfect for post-dip teas or mid-hike refreshment. 🧥 5. Thermo-Tech Changing Robe From freezing lakes to rainy beaches, this super-insulated robe wraps you in warmth while you change. Windproof, water-resistant and cosy enough to live in between swims. 💬 Got a UK swim spot to recommend? Drop your favourite below and let the community know where you’re diving in next 👇
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zone3official
23/05/25
Planning a staycation with open-water swims on the agenda? Don’t hit the road without these 5 holiday essentials that blend performance, comfort, and innovation, whether you're taking the plunge or soaking in the scenery. 🧭 1. Zone3 Waterproof Phone Pouch Stay safe + snap the moment. This buoyant, watertight pouch keeps your phone sealed from the elements while floating beside you for easy access:GPS, safety calls or that post-swim selfie, sorted. 🏖 2. Swim Safety Buoy Not just for visibility, our buoys offer a float to grab hold of when you need a breather in the water, plus are in-water storage for your dry kit and valuables. They're lightweight, eco-conscious, and swimmer-approved for peace of mind. 🕶 3. Waterhaul x Zone3 Sunglasses Sustainably made from ocean plastic and engineered for active wear, these polarised shades reduce glare off the water and keep you looking sharp on swim breaks. 🫖 4. Zone3 Ocean Bottle Hydration with a mission. This vacuum-insulated bottle keeps drinks cold (or hot) and supports ocean cleanup with every purchase. Perfect for post-dip teas or mid-hike refreshment. 🧥 5. Thermo-Tech Changing Robe From freezing lakes to rainy beaches, this super-insulated robe wraps you in warmth while you change. Windproof, water-resistant and cosy enough to live in between swims. 💬 Got a UK swim spot to recommend? Drop your favourite below and let the community know where you’re diving in next 👇
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zone3official
23/05/25
Planning a staycation with open-water swims on the agenda? Don’t hit the road without these 5 holiday essentials that blend performance, comfort, and innovation, whether you're taking the plunge or soaking in the scenery. 🧭 1. Zone3 Waterproof Phone Pouch Stay safe + snap the moment. This buoyant, watertight pouch keeps your phone sealed from the elements while floating beside you for easy access:GPS, safety calls or that post-swim selfie, sorted. 🏖 2. Swim Safety Buoy Not just for visibility, our buoys offer a float to grab hold of when you need a breather in the water, plus are in-water storage for your dry kit and valuables. They're lightweight, eco-conscious, and swimmer-approved for peace of mind. 🕶 3. Waterhaul x Zone3 Sunglasses Sustainably made from ocean plastic and engineered for active wear, these polarised shades reduce glare off the water and keep you looking sharp on swim breaks. 🫖 4. Zone3 Ocean Bottle Hydration with a mission. This vacuum-insulated bottle keeps drinks cold (or hot) and supports ocean cleanup with every purchase. Perfect for post-dip teas or mid-hike refreshment. 🧥 5. Thermo-Tech Changing Robe From freezing lakes to rainy beaches, this super-insulated robe wraps you in warmth while you change. Windproof, water-resistant and cosy enough to live in between swims. 💬 Got a UK swim spot to recommend? Drop your favourite below and let the community know where you’re diving in next 👇
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Z
zone3official
23/05/25
Planning a staycation with open-water swims on the agenda? Don’t hit the road without these 5 holiday essentials that blend performance, comfort, and innovation, whether you're taking the plunge or soaking in the scenery. 🧭 1. Zone3 Waterproof Phone Pouch Stay safe + snap the moment. This buoyant, watertight pouch keeps your phone sealed from the elements while floating beside you for easy access:GPS, safety calls or that post-swim selfie, sorted. 🏖 2. Swim Safety Buoy Not just for visibility, our buoys offer a float to grab hold of when you need a breather in the water, plus are in-water storage for your dry kit and valuables. They're lightweight, eco-conscious, and swimmer-approved for peace of mind. 🕶 3. Waterhaul x Zone3 Sunglasses Sustainably made from ocean plastic and engineered for active wear, these polarised shades reduce glare off the water and keep you looking sharp on swim breaks. 🫖 4. Zone3 Ocean Bottle Hydration with a mission. This vacuum-insulated bottle keeps drinks cold (or hot) and supports ocean cleanup with every purchase. Perfect for post-dip teas or mid-hike refreshment. 🧥 5. Thermo-Tech Changing Robe From freezing lakes to rainy beaches, this super-insulated robe wraps you in warmth while you change. Windproof, water-resistant and cosy enough to live in between swims. 💬 Got a UK swim spot to recommend? Drop your favourite below and let the community know where you’re diving in next 👇
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Z
zone3official
23/05/25
Planning a staycation with open-water swims on the agenda? Don’t hit the road without these 5 holiday essentials that blend performance, comfort, and innovation, whether you're taking the plunge or soaking in the scenery. 🧭 1. Zone3 Waterproof Phone Pouch Stay safe + snap the moment. This buoyant, watertight pouch keeps your phone sealed from the elements while floating beside you for easy access:GPS, safety calls or that post-swim selfie, sorted. 🏖 2. Swim Safety Buoy Not just for visibility, our buoys offer a float to grab hold of when you need a breather in the water, plus are in-water storage for your dry kit and valuables. They're lightweight, eco-conscious, and swimmer-approved for peace of mind. 🕶 3. Waterhaul x Zone3 Sunglasses Sustainably made from ocean plastic and engineered for active wear, these polarised shades reduce glare off the water and keep you looking sharp on swim breaks. 🫖 4. Zone3 Ocean Bottle Hydration with a mission. This vacuum-insulated bottle keeps drinks cold (or hot) and supports ocean cleanup with every purchase. Perfect for post-dip teas or mid-hike refreshment. 🧥 5. Thermo-Tech Changing Robe From freezing lakes to rainy beaches, this super-insulated robe wraps you in warmth while you change. Windproof, water-resistant and cosy enough to live in between swims. 💬 Got a UK swim spot to recommend? Drop your favourite below and let the community know where you’re diving in next 👇
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Z
zone3official
23/05/25
Planning a staycation with open-water swims on the agenda? Don’t hit the road without these 5 holiday essentials that blend performance, comfort, and innovation, whether you're taking the plunge or soaking in the scenery. 🧭 1. Zone3 Waterproof Phone Pouch Stay safe + snap the moment. This buoyant, watertight pouch keeps your phone sealed from the elements while floating beside you for easy access:GPS, safety calls or that post-swim selfie, sorted. 🏖 2. Swim Safety Buoy Not just for visibility, our buoys offer a float to grab hold of when you need a breather in the water, plus are in-water storage for your dry kit and valuables. They're lightweight, eco-conscious, and swimmer-approved for peace of mind. 🕶 3. Waterhaul x Zone3 Sunglasses Sustainably made from ocean plastic and engineered for active wear, these polarised shades reduce glare off the water and keep you looking sharp on swim breaks. 🫖 4. Zone3 Ocean Bottle Hydration with a mission. This vacuum-insulated bottle keeps drinks cold (or hot) and supports ocean cleanup with every purchase. Perfect for post-dip teas or mid-hike refreshment. 🧥 5. Thermo-Tech Changing Robe From freezing lakes to rainy beaches, this super-insulated robe wraps you in warmth while you change. Windproof, water-resistant and cosy enough to live in between swims. 💬 Got a UK swim spot to recommend? Drop your favourite below and let the community know where you’re diving in next 👇
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zone3official
14/05/25
Are you ready for the Arla Great North Swim in June? @zone3official takes you through ‘sighting’ in open water, so you swim in the right direction and don’t zig zag your way around. Practicing sighting before the event will make sure you swim in a straight line and ensures you don’t swim further than you need to on the day. If you’re swimming in the pool, why not grab a bottle and use it as a marker at the end of your lane. Try to lift your eyes or head to look at it every few strokes. If you can practice in the open water, a landmark in the distance is a good marker to swim towards too! #openwaterswimming #zone3 #zone3official #greatnorthswim2025
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zone3official
01/05/25
Introducing the all-new Glide Wetsuit — engineered to help new triathletes and open-water swimmers feel fast, supported, and in control from their first swim to their final stroke. Whether you're stepping into open water for the first time or building confidence ahead of race day, Glide is your perfect entry point. Its performance-enhancing design combines flexibility where it counts, balanced buoyancy, and durable comfort, helping you conserve energy, swim naturally, and stay focused on your goals. Comment 'Glide' for more info sent straight to your DMs.
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zone3official
01/05/25
Introducing the all-new Glide Wetsuit — engineered to help new triathletes and open-water swimmers feel fast, supported, and in control from their first swim to their final stroke. Whether you're stepping into open water for the first time or building confidence ahead of race day, Glide is your perfect entry point. Its performance-enhancing design combines flexibility where it counts, balanced buoyancy, and durable comfort, helping you conserve energy, swim naturally, and stay focused on your goals. Comment 'Glide' for more info sent straight to your DMs.
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