If you have a sports or exercising injury, which of the following below is an important rule to follow?
take plenty pain killers to kill the pain.
jump back into exercise or practice as soon as you feel up to it.
if you have an important game coming up, it is okay to play in that game, but take time off after it is over.
take a break from exercise and sports until your doctor says you are okay to go back to it.

to increase speed you need to decrease frictiona dn drag hense why sprinters wear tight track suits to keep tight against there skin to keep away from wind and decrease the amount of drag you are carrying.a swimmer will wear the tightest swim suit they can possibly fit into (i was a size 28 swim suit at meets i wore a   size 23) why? because the tighter your clothing is the less drag and negative force you have. the heavier the clothe the slower and more wind gets caught. cotton tends to hold onto alot of sweat and water making it slower then say a track suit (no idea what they are made of but they are really comfy around your answer )

phat