How do you build muscle by working out?

what is the best way to build muscle? what is the best workout?

Hi,

Follow the workout below. With each exercise, pick a weight that you can do for the number of reps indicated before you fail to do another repetition of the movement. Do the workout 2-3 times a week with at least one or two days rest between each workout.

* Warm Up sets (perform each exercise first with light weights first to ensure you don't injure yourself)
* Pushups: 3 Sets of 20 (if too hard, try on knees) once you are good at them try adding more gravity, it makes more challenging
* Bench Press: 3 Sets of 10 reps
* Leg Extension: 4 Sets of 8 reps
* Military (Overhead) Press: 3 Sets of 11 reps
* Barbell Rows: 4 Sets of 10 Reps
* Biceps Curls: 3 Sets of 12 Reps
* Crunches: 5 Sets of 20

It depends on the results you want to achieve.
Working out and body building is like sculpting.

Do you want a lean toned body? A nice Core? Bulging Muscles?

I suggest you invest in the book The Home Work Out Bible
It's full of different muscle workouts and you can put together a workout tailored to your own needs.