To some extent - all effort is made to smooth out equipment being used that might slow down the pace of a game, such as helmets, the ball being used, the shape of hockey sticks, etc.
it gives them aerodynamics
Aerodynamics can be use to increase performance by efficiency (less air drag) and speed higher top speeds. In Architecture, in sports, all to cheat the effects of wind resistance on something, whether it be the wind trying to knock over a building/structure, or make a Racing car go faster, it is a very widely used discipline.
To improve aerodynamics and allow the car to cut through the air.
Clearly all sports. No sports allow use of steroids.
Mostly all sports use ratios to caculate the number of wins and losses.
You concentrate a lot in sports. You can use all that concentration and use it for school.
All the sports because you could get injure in your mouth
carpenters use it all the time Architecture, Surveying, Astrophysics, Aerodynamics and Aviation, just to name a few.
gymnastics
..all sports
Aerodynamics
All sports that require the competitor to be alive use the cardiac AKA the heart muscle.