1/2 hour total. That's for a full body workout e.g. Curls. Take a barbell and do one set with 40 pounds. Rest a minute. Than take a barbell and put on 80or 90 or 100 pounds. Just enough where you can't do more than 5 reps. Than you are done with biceps for a week. Do this for each body part. Your muscles grow NOT in the gym but while at rest. I'm not looking for a debate. When you quit making progress give this a try. You will be amazed. Or don't try it. I don't care. I'm not looking for an argument. Good luck with whatever you try Wanna kill these ads? We can help!