Even though hockey pucks are made from vulcanized rubber (vulcanized rubber is the result of rubber being heated with sulfur to make it harder and more durable) they still tend to have a bit of a bounce to them when warm.
Why are hockey pucks hard? Since the pucks are made of similar rubber, they have a tendency to bounce. The object of the puck is to slide, not to bounce, so the league came up with chilling the pucks to make them harder. Read More...
To help them get fresh air. Soccer is a very physical game, and it requires its players to run, jump, walk, and many more. While doing this, the soccer players will sweat as a result of the physical activities involved in the game. And one of the remedies to sweat for a soccer player is to roll up their shorts.
Why do soccer players have to lift their shorts? The reason is pretty simple. Read More...
Running backs run up the middle because it's the shortest path to the end zone. Plays are often designed to move defensive players out of the way so the running back can run straight as fast as he can.
Why do running backs line up so far back? The running back lines up in the backfield behind, or next to, the quarterback. Their primary responsibility is to take handoffs and then run as far up field as they can before getting tackled. Read More...
