I have been doing my chest and tris twice a week for about 2 months now, things have been going ok but now what I would like...I lift chest and tris every Monday and Thursday because I heard it takes about 3 days for your muscles to completely recover. Anyways, now I am worrying about over-training them, so I am wondering...is it bad to do them twice a week? Should I switch to once a week?? Please get back to me.