What material is used to fill punching bags? - Quora

Answer (1 of 16): A mix of sand and powdered wood with a heavy base that’s what I use

What are the best punching bags? - Quora

In Avengers, Captain America “breaks” off a punching bag, knocking it a good distance and appears to rip open the bag. Can a real life person do something like that? - Quora

What material is used to fill punching bags? - Quora

What should I put inside my punching bag as a featherweight? - Quora

Is it harmful to carry a heavy bag on the back? - Quora

Which place at home can I hang my boxing bag so I can move around it? I live in a building so I don't think my ceiling is hard enough. - Quora

How heavy is a duffel bag of money? - Quora

Does punching wood make knuckles stronger? - Quora

What material is used to fill punching bags? - Quora

Can you break your hand on a punching bag? - Quora