Sounds like a stupid question but I'm being legitimate here. Reason is, I work 50 hours a week at my job and by the time I finish late at night and have dinner I do my workouts at the gym but by the time I get back home its pretty late though I'll still stay up and do other stuff. Most nights I'll average 5-6 hours sleep which is really baad cause I'm feeling the effects of fatigue and weakness set in during the days but how bad is it really hurting my progress in muscle gain? I know you are supposed to eat and rest just as well as you train hard but if I'm missing out on the resting part alot is it all just a waste? By rest I do mostly mean sleep as I do rest my muscles by only doing 1 muscle group per day per week. Advice greatly appreciated thanks!