Apple Watch is a great swimming companion, offering highly accurate length counts, pace measurements and stroke recognition. But the benefits to swimmers don’t stop there.

You’ll find plenty more useful swim stats in the Fitness app on your iPhone. Strokes Per 25/50/100 is especially valuable because it tracks your swim efficiency, which is key if you want to go faster, further or just look more cool in the pool.

But the way Apple Watch counts your strokes is not as simple as it seems. Whether you’re a beginner or an expert swimmer, it’s worth taking time out to understand exactly how it works.

Summer is almost upon us.* If you’ve been training hard all winter to look awesome in a Speedo on the beach, then you can totally skip this post.

Still here? That’s cool. Because in this post we’ll look at five awesome ways your Apple Watch can help give your body a quick tune-up before you hit the beach this summer.

While many of us learn to swim at school, plenty of people never return to the pool as an adult. If that sounds familiar, but your shiny new Apple Watch Series 4 is tempting you to dip your toe in the water again, this guide to swimming with Apple Watch is for you.

We’ll take a look at what equipment you’ll need, how to use your watch for swimming, how to structure your workouts for maximum fitness gains, and how to track your progress in Apple’s Activity app.

Let’s dive in and start swimming with Apple Watch.