What is overtraining? A. overloading the muscles too often
B. progressing through exercises too quickly
C. muscles that aren't adapting quickly enough
D. when muscles start atrophying

A) overloading the muscles to often

Explanation:

You have to allow your muscles to fully recover after a workout. Since when you workout your tearing the fibers in your muscles, and during your rest period your allowing your body to rebuild those fibers and during that process they add more fibers to your muscle. Making your muscles bigger and stronger.

for me i have felt invisible when i was clearly struggling,or,i made a great achievement ,and,nobody took to notice me either because they just didn't see it,or,people just turned their back on me.i can see a person being invisible by choice,or,without choice like i did.the people who are invisible by choice don't try to talk to people,don't try to make friends,and,keep to themselves.i haven't been one of those people so i couldn't give you a reason.

hope this and can i get bainliest my dude : d