In order to build lean muscle you need to work out three to four times per week. You should do workouts that use all the muscles in your body, as this will help you to lose weight quickly and strengthen your muscles at the same time. Working out every day can cause your body to become injured and would be counterproductive.
Remember to go to the gym with a friend when you are working on building up your muscles. If you try to do so alone, it is possible that you put yourself into a difficult situation, especially when using free weights. This can lead to serious injuries or lesions.
Perform your lifting regimen every other day. After a vigorous workout, the protein synthesis process can take up to 48 hours to complete. In other words, your body builds muscle for up to two-day post-workout, and working out while your body is still recovering may undo your hard work. Enjoy the day of rest--it will help to maximize your results.