They make you healthier, more relaxed, younger looking, with better skin and apparently can even cure a hangover. If you haven't got room for a sauna in your back garden, here's the next best thing: 20 of our favourite UK Coolstays with their own private sauna.
nr. Bude - Cornwall
Sleeps 12 (+4)
Head to the North Cornwall coast at Barford, a stunning holiday home for up to 16 people that offers sea views and luxurious living. Treat yourself to a spa afternoon: start outside in the wood-fired hot tub, then head inside to the sauna and spa room.
Princetown - Devon
Sleeps 18
A beautiful Georgian country house in Devon’s picturesque Dartmoor National Park. Sleeping up to 18, it’s perfect for a group getaway. Check out the infrared sauna - great if you find traditional saunas a bit too intense - then cool off under the walk-in shower.
Rudyard - Staffordshire
Sleeps 2-8 + one small child
Ideal for short stays or longer breaks, Waters Edge Cool Cabin is a luxurious waterside self-catering property set on Rudyard Lake on the edge of the Peak District. An outside hot tub, sauna and shower room will help you make the most of the fresh air.
Windermere - Cumbria
Sleeps 12
Stunning lodge with luxurious facilities and unrivalled views over Lake Windermere in the Lake District, a unique destination for family holidays or celebrations. This place comes complete with its own sauna, steam room and gym complex, cleverly built into the hillside.