You’ve probably walked around the gym and seen it—powdery gym chalk on the barbells and hand weights. But what is gym chalk, and how can it help you? That all depends on what you’re doing and how you use the chalk in the gym.

Gym Chalk: Why Do Athletes Use It?

Unless you’re a gymnast or a serious lifter, it’s unlikely that you’ve used chalk in the gym before. So, what is gym chalk, and what is gym chalk made of? Typically made of magnesium carbonate, gym hand chalk helps improve your hold on weights or bars when sweat might otherwise make it harder to maintain your grip. Much like the chalk that rock climbers use to create friction between their fingers and the rock holds, weightlifting chalk helps ensure you don’t lose your grip. That extra friction can help you complete more reps than you’d be able to do without chalk.

Additionally, using chalk can help you maintain proper form, which can also prevent injuries. Without chalk, your sweat can cause your grip to slip. You might feel the weight shift dangerously in your hands, or you might start to slip from a bar. When that happens, you try to compensate so you don’t drop the weight or fall from the bar. Frequently, that means you adjust away from optimal form, increasing the likelihood of hurting yourself.

Types of Gym Chalk: Powder vs. Blocks vs. Liquid Chalk

Gym chalk is available in several different forms, and there are advantages and disadvantages to each, depending on its use. Here’s what to consider when you’re looking at different types of chalk to bring to the gym.

Powder Chalk

Powder chalk is just loose, crushed chalk that must be contained so it can be distributed on your hands effectively without spilling it all over the gym. (Your gym will thank you.) You can put powder chalk in a chalk bag, like rock climbers use, or in a chalk ball, which you squeeze to distribute chalk onto your hands.

• Advantages: Easy to use and refillable
• Disadvantages: Messy and can be harder to control chalk distribution

Chalk Blocks

Chalk blocks are the original portable chalk. The blocks are large, solid squares of chalk that can be rubbed right on your hands or can be broken down into smaller pieces or powder chalk as needed.

• Advantages: Inexpensive and easy to use
• Disadvantages: Messy and bulky to carry around

Liquid Chalk

What is gym chalk made of if it’s liquid? Liquid chalk is a quick-drying paste made of chalk and alcohol that dries to a powder finish. Squeeze out some of the liquid chalk, rub your hands together, and a layer of chalk covers your hands.

• Advantages: Easy to carry and creates significantly less dust
• Disadvantages: More expensive and dries out your hands more due to the alcohol

How to Use Gym Chalk Properly

It might seem like a simple thing, but applying weightlifting chalk can take a little finesse.

1. Apply. For loose chalk, squeeze the chalk ball or reach into your chalk bag and cover your hand, rubbing it gently on the other hand to distribute. If you’re using a block, keep it solid and rub it right on your hands. For liquid chalk, simply squeeze some out and rub your hands together.
2. Lift. That’s it! You’re ready for your deadlifts or pull-ups. No need for clapping or excessively rubbing your hands together—all that does is get rid of the chalk and make a mess in the gym.
3. Clean up. Keep your gym happy by cleaning up after yourself. Use a damp towel to wipe your chalk off equipment when you’re finished, and wipe up any chalk you may have spilled on the floor.

Is Gym Chalk Safe?

Generally speaking, using chalk in the gym is safe. The United States Food and Drug Administration (FDA) has deemed magnesium carbonate safe, and there aren’t currently any known allergies to it. However, it can hang in the air for a while, and as such, it can reduce indoor air quality. Liquid chalk mitigates this problem, as does opening doors and windows for better airflow or integrating stronger HVAC systems.

Because of the impact on air quality and the potential mess, some gyms have restrictions on using chalk (or certain types of chalk). If you are concerned about chalk use or excessive chalk dust, talk to your gym about how they address these concerns.

Maximizing Performance with Gym Chalk

What is gym chalk going to do for you? If you’re learning how to start powerlifting, increasing your weight or reps, or practicing lifting that requires quick movements, chalk can be beneficial. It helps you complete more reps, but it also helps you maintain a safe form and procedure, which benefits you and everyone around you. While you won’t always need gym hand chalk, it’s smart to have it available.