LEGS OF STEEL (KEEP YOUR LEGS FROM SINKING DURING FREESTYLE OR WHILE FLOATING)

Sinking legs are one of the most common and frustrating problems in swimming. The cause, and the solution, almost always comes back to one fundamental skill: the position of your head.

This guide is a follow-up to the "Tree Log" lesson, reinforcing why your head position is the building block of your stroke and providing a new drill to help you learn to breathe without your legs dropping like a rock.

Key Takeaways:

• Why treating your body like a "teeter-totter" is the #1 mechanical secret to keeping your legs from dropping.
• The counter-intuitive reason why "kicking harder" actually makes you sink faster (and what to do instead).
• How a simple "Roll to Your Back" movement completely eliminates the panic of breathing. (Watch the short video below to see the drill)

⚡ Quick Summary: Fixing Sinking Legs

Short on time? Get the key highlights from this article in just a few minutes. This video summary walks you through the "Teeter-Totter" posture fix and the hidden mechanical traps pulling your lower body down, perfect if you want a quick visual overview of the concepts before reading further.

Dive Into: Your Guide to Fixing Sinking Legs

• Why Head Position is the Ultimate Fix
• 🎧 Listen: The Physics of Sinking Legs (Audio Deep Dive)
• 3 Hidden Reasons Your Legs Are Still Sinking
• 3 Things You Can't Ignore: Anatomy, Speed, and Ankles
• Quick Fixes If Your Legs Still Sink
• How to Breathe for Better Balance
• The "Roll to Your Back" Breathing Drill
• 🖼️ The "Why You Sink" Visual Guide
• Frequently Asked Questions

Why Head Position is the Ultimate Fix

This is a follow-up to our lesson on proper head position while swimming freestyle.

I know you might be tired of hearing the words "put your head down" while you swim. But believe me when I say: this is the absolute building block of your swimming. Think of your body like a teeter-totter. Your lungs are the fulcrum (the center point). If you lift your head up to look forward, the other side of the teeter-totter—your legs—will inevitably drop.

Without a proper, downward head position, your stroke will never be as efficient as it could be, meaning you will work harder and tire out much faster.

I'm revisiting this topic because repetition builds muscle memory. Imagine I am standing on the pool deck watching you swim. Every so often, I remind you to drop your head so you stay streamlined and your legs rise up. After a while, every time you catch a glimpse of me, a switch in your brain flips: "Is my head too high? Drop the head." You associate the trigger with the action.

While I can't walk the pool deck with you every day, repeating these concepts here on the blog serves the same purpose. If you are following my advice from the previous post, you are well on your way.

🎧 Listen: The Physics of Sinking Legs (Audio Deep Dive)

Want to go deeper? Play this full breakdown Audio Masterclass while you stretch or commute.

In this episode, we go deeper into the brutal physics of why fit athletes sink, discuss the concept of Specific Gravity, and break down exactly how to stop fighting the water and start gliding.

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The Physics of Sinking Legs Full Audio Masterclass · 22 min

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3 Hidden Reasons Your Legs Are Still Sinking

If you have fixed your head position and are exhaling smoothly but still feel like your lower half is dragging along the bottom of the pool, check these three common mechanical traps:

1. You Have a "Spaghetti" Core Your lungs act as two giant, buoyant balloons. To transfer that floatation down to your toes, your body needs to be connected. If your core is completely relaxed and floppy (like a wet noodle), your lower back will arch, and your legs will disconnect and sink. You don't need to do an intense crunch, but simply pulling your belly button slightly toward your spine will lock your body into a straight, floating line.

2. You Aren't "Pressing the Buoy" Going back to our teeter-totter metaphor: your chest (lungs) is the center point. If you want the back end of the teeter-totter (your legs) to go up, you have to press the front end down. Lean a little bit of your body weight forward into your chest and armpits. By "pressing the buoy" (your lungs) downward into the water, your hips and legs will naturally pop up to the surface.

3. You Are "Bicycle Kicking" Many beginners drop their knees and kick from the knee down, resembling a bicycling motion. Every time your knee drops toward the bottom of the pool, it catches water like a parachute, creating massive drag that pulls your lower body down. A proper freestyle kick originates from the hips with a relatively straight (but not rigid) leg, keeping your feet fluttering right at the surface.

3 Things You Can't Ignore: Anatomy, Speed, and Ankles

Sometimes, you can fix your posture, but the physics of the water are still fighting you. If you are still sinking, consider these final three factors:

1. Your Anatomy (The "Heavy Legs" Reality) If you are a runner, a cyclist, or someone with a lot of lower-body muscle mass, you are, unfortunately, going to sink faster. It comes down to a physics concept called Specific Gravity (density). Pure water has a density of 1.0. Human fat has a density of about 0.9, meaning it floats. But muscle tissue has a higher density of roughly 1.06 to 1.10, meaning it literally sinks. If you have "heavy legs," don't get frustrated! You aren't failing; you are just fighting physics. It simply means you must rely strictly on perfect technique and momentum rather than natural buoyancy.

2. You Lack "Airplane" Momentum Because water is roughly 800 times denser than air, the way you move through it dictates your body position. Think of an airplane: if it flies too slowly, it drops out of the sky. The water works the same way through a concept called hydrodynamic lift and glide efficiency. When you float still, gravity pulls your heavy legs down. But as soon as you move forward, the water hitting your chest and thighs pushes back upward, helping you "plane" across the surface. Sometimes the fix for sinking legs isn't kicking harder, but simply smoothing out your stroke to generate a little more forward speed to create that lift.

3. You Have "Anchor" Ankles Are your toes pointed naturally like a ballerina, or are your feet flexed at a 90-degree angle like you are standing on the floor? Stiff ankles act like giant hooks dragging behind you, catching water and pulling your hips down. Work on your ankle flexibility and use fins. Gently pointing your toes backward turns your feet from anchors into flippers, streamlining your lower half and helping you glide on the surface.

Quick Fixes If Your Legs Still Sink

If you have done all the previous exercises pretending to be a tree log and extended tree log and your legs are still sinking, don't despair.

First, check if your head is in the right position.

Don't be afraid to bury your head down in the water, even let some water go over your head, so you are floating with your head underwater. This should help a little.

Second, slightly increase your kicking and this will help to keep your legs up. Also, remember, we are not breathing yet.

The exercises are meant to be done only for a short period of time to get you used to the correct head position.

If you continue struggling with the sinking legs problem, you should check out the shinfin™ leg fins. This simple piece of equipment does wonders with sinking legs.

How to Breathe for Better Balance

When we are on the topic of breathing, before you start floating, take a deep breath, so your lungs are full of air and keep you at the surface without problems, then when you start floating, keep exhaling your air at a very steady slow rate (DO NOT hold your breath in).

You will see that it relaxes you more during the floating exercises to slowly let the air out.

You will also notice, that you will not be as tight and will very slowly start losing your buoyancy. When you run out of breath or you think you are starting to sink too much, just stand up and repeat the exercise.

The "Roll to Your Back" Breathing Drill

he next step is learning to take a breath without stopping your momentum.

Start by floating on your stomach in the half-extended tree log position (like the picture above). One arm is pointing forward, and the other is resting at your side pointing backward. Your head is buried in the water, with the back of your head just barely breaking the surface.

To get ready to reotat, slowly exhale the air out of your lungs. When you need to take a breath, calmly rotate your body toward the side of your extended arm. Continue rotating until you are completely on your back, then take a deep, relaxed breath.

How do you rotate to your back effectively? Use your kick and your hips.

If you are laying on your stomach with your right arm extended, start driving your left hip up toward the ceiling and your right hip down toward the bottom of the pool. This rolls you onto your right side. At the same time, adjust your kick slightly (using a small, controlled scissor kick) to assist the rotation.

Once you have caught your breath on your back, reverse the hip drive to smoothly roll back onto your stomach and resume the drill.

Add this breathing drill to your daily routine, and we'll continue to build up your body position in the next lesson about body balance.

🖼️ The "Why You Sink" Visual Guide

Sometimes it helps to see the technique in action. We've created this quick-reference guide to help you visualize the "teeter-totter" effect and proper core alignment.

Review this image to understand how dropping your head and "pressing the buoy" work together to lift your legs to the surface.