Chalk
chalk
Yes, they are excellent climbers due to the claws on their hands!
so they don't have to fall ever single when they get on it
Lebron puts on chalk on his hands to help the ball stick better. You have probably already seen him do his traditional "put extra chalk in his hands, throw it up, blow it into the air, and clap his hands." Garnett is also known for clapping his hands in front of the commentator with the extra powdery chalk in his hands.
The chalk-like substance is, in fact, chalk.
Because it is hygroscopic and leave traces on a tougher rock.
Gymnasts use chalk on their hands to help them grip the Uneven Bars.
chalk
If the chalk is dry, nothing.
No
Chalk bags can be used for rock climbing, weight lifting and certain types of construction. The bag holds chalk and pieces of chalk so that it can be applied to the hands without creating a mess.