As soon as the heat kicks in, the water calls. And the good news is you don’t need to swim lengths or count laps: getting in the water — the sea, a pool, a river — is one of the simplest pleasures left, and it asks nothing in return.

First, float. Lie on your back, fill your lungs with air and let the water hold you up. It’s one of the few times when you don’t have to do anything: not carry your own weight, not get anywhere. Just breathe and stay there.

Did you know? You float thanks to pure physics: your body’s density is very close to that of water, and with your lungs full of air you weigh almost nothing in it. That’s why moving in water takes so little effort: the water carries nearly all your weight.

And if you feel like moving, swimming is about as kind as exercise gets: gentle on the body and no gasping for breath. You don’t need style or speed. A few easy strokes, walking through chest-deep water or crossing the pool at your own pace all count. No technique required, no record to beat.

And the best part: almost anything goes and almost nothing costs money. A council pool, the sea first thing in the morning, a mountain river. Go mid-morning or late in the afternoon, when the sun is less fierce and the water is calmer. There’s your best summer plan, without spending and without a schedule.

Start today: find the nearest water — pool, beach or river — and go at a time when the sun isn’t punishing. Half an hour floating and summer’s sorted.

Summer Getting started