Million Whys Press logo
Million Whys PressToronto
← Book 28 videos

Book 28, Question 26 · Video

Why do gymnasts and climbers rub chalk on their hands?

Video · 1:47 · Crafty Clover explains, from A Million Whys Book 28

Sweat makes hands slippery. The white powder, called chalk, is usually magnesium carbonate, and it soaks up the moisture so skin can grip better. Gymnasts use it on bars and rings, weightlifters on barbells, and climbers on rock. Too much chalk can make things slippery in a different way, so athletes use just enough. Chalk is also messy and washes off with soap.

Read the full answer →

What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. Why do gymnasts and climbers rub chalk on their hands?

The Big Idea

Gymnasts and climbers clap white powder on their hands. Poof! A little cloud! What does chalk do?

Sweaty Hands

Step one: Sweaty Hands. Sweat makes hands slippery. The white powder, called chalk, is usually magnesium carbonate, and it soaks up the moisture so skin can grip better.

Who Uses It

Step two: Who Uses It. Gymnasts use chalk on bars and rings, weightlifters on barbells, and climbers on rock. It helps them hold on tight.

Just Enough

Step three: Just Enough. Too much chalk can make things slippery in a different way, so athletes use just enough. Chalk is also messy and washes off with soap.

A Closer Look

Let's take a closer look! Grip bars. Hold barbells. Grab rock. Chalk soaks it.

Quick Facts

Quick facts! Chalk used in sports is different from the chalk on blackboards. Soaks up sweat. Helps skin grip. Use just enough.

Think Like a Scientist

Now, think like a scientist! Wash your hands. Try holding a smooth plastic cup with damp hands. Dry your hands well. Hold the cup again. Which grip was better?

Outro

Gymnasts and climbers use chalk, usually magnesium carbonate, to soak up sweat so their skin grips better on bars, barbells, and rock. Athletes use just enough, since too much can be slippery too. Science is amazing! What will you discover next? Every question is a new adventure, so keep wondering and keep exploring with me! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!

Why I wrote this