Q: In addition to question 345.So if i work one part of mucles(example legs)one day can i sleep at night and work another group of mucles the next day?

A: Yes, that's perfectly OK -- separating out muscle groups like that is how 'split' programs are structured. Just make sure that you have AT LEAST 2 full days every week when you don't do any weight training. I also recommend that every two months you take a full week off gym and then come back to a different routine. So if you were doing a 5-days-a-week weight routine for 2 months, then you'd take the week off and come back with a 3-days-a-week routine for another 2 months. After that you can go back to 4 or 5 days routines again. Vary the volume of your program (basically the number of sets you do in a week) throughout the year.