Hi l have researched how to work out each individual muscle and l cant find out how long to work each muscle. Some of my friends say that they just worked there biceps for an hour. l cant find out what they do for an entire hour. If anyone knows how long l should be working out each muscle please answer

all depends, my workouts are usually about 30-45 minutes. an hour if l go really slow.

each muscle 10 minutes a day. any more than that and your wasting your Time

30min-1hour TOPS, any more will be dangerous and could lead to some serious physical damage.

First of all, working just 1 muscle for an hour is not a good thing. If u work ur biceps, u also need to work ur triceps. The easy way to remember this is if u work the front of something, work the back also. As far as time, do not worry so much about time as u do repetitions. Find a weight that is challenging for u & do let is say 10 reps. If it is easy, add some weight. When u find a point where 10 reps r hard to finish, stick with that weight for a while. Do 3 sets of 10. Do this for each muscle group. Hope this helps a little.

workouts on average for 2 muscles should be 40 - 60 mins maximum.. and u should not exceed 4 - 5 different exercises for a large muscle.. and no more then 3 exercises for a smalller muscle

sets for each exercise should be 3 - 4.. depending on how u feel.
after u train for longer then 40 - 60 mins.. your blood sugar goes too low, and you just go into over training..