First comes non-rem sleep, followed by a shorter period of rem sleep, and then the cycle starts over again
This is more of an opinion based question. We can't really help you. Sorry
( You ) Yes coach I have , I have improved but (the hardest test to you here)
I might need to work on to be the best, fit, and strongest person there can ever be !
By strengthening your body it allows it to take more hits or strain without becoming injured.