Why Do Some People Float… and Others Sink?


It’s one of the most common (and frustrating) questions beginners ask when learning to swim.

Hi, Mark here. Hope all is well.


Have you ever noticed how one swimmer can lie back and float effortlessly… while another feels like they’re fighting the water the whole time?

It isn’t luck — and it isn’t strength. It comes down to understanding how your body interacts with the water — and once that clicks, confidence grows very quickly.

This week I’m sharing two simple but powerful resources to help you (and your swimmers) finally crack the floating puzzle.


For Swimming Teachers

A Ready-to-Use Floating & Gliding Lesson Plan

Floating is often the moment where nervous swimmers either relax… or panic.

With the right structure, it becomes one of the most rewarding skills you can teach.

Download the Floating & Gliding lesson plans:

Inside you’ll find:

• Clear, step-by-step progressions
• Confidence-building drills
• Easy ways to adapt for different ability levels

Perfect for:

  • Saving planning time
  • Delivering more structured lessons
  • Helping swimmers experience that first “I can do this” moment

Want more ready-made sessions you can use straight away?
Explore the full collection of Swimming Lesson Plans

Build yourself a complete, stress-free teaching toolkit for the term ahead.


For Beginners and Swimmers

Why We Sink (And How to Float)

Floating still isn’t the same as staying up while swimming — and that’s where many beginners get confused.

The secret lies in something called relative density.

Think of it like this:

Logs float. Rocks sink.

Some bodies naturally float more easily, while leaner or more muscular swimmers may find it harder at first.

But here’s the important part:

Anyone can learn to float with the right technique.

Read the simple science behind floating and sinking
You’ll also find practical exercises that make floating click — even if you’ve always struggled.


Your Next Step

Whether you’re:

  • A teacher wanting calmer, more confident lessons
  • Or a beginner determined to finally feel relaxed in the water

These two pages will give you the clarity (and the plan) to move forward.

See More Lesson Plans for Teachers


Learn How to Float (Step by Step)


Happy swimming,
Mark
Swim Teach

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Hi! I'm Mark, creator of Swim Teach

I've been teaching swimming for over 30 years and I built Swim Teach so that I can share all my knowledge, wisdom and experience from the thousands of swimming lessons I have had the pleasure of teaching. Take a look back through my previous newsletters and see what you missed.

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