I would say, listen to your body. If it says, "I'm fatigued" then give it a rest. If you're catching too many colds - from your immune system being stressed - give it a rest.
It's not necessary to work out *every* day. It's ok to take one or more days off. It's ok to recover.
There's probably blood work that can test for various things (i.e., over-training) but I don't know any off hand.
It's not necessary to work out *every* day. It's ok to take one or more days off. It's ok to recover.
There's probably blood work that can test for various things (i.e., over-training) but I don't know any off hand.