There's more to building muscle than weight training. Here Pro Muscle are the 10 Muscle Building Facts that You Need to Know:
1. Genetics plays a role in building muscles.
If you parents are big and stocky, then you will most likely have the same traits. Now this doesn't mean you can't have a muscular physique. It just means you'll have to work hard at it.
2. Your metabolism affects your size.
If you have problems gaining weight, fat or muscles, then you probably have a high metabolism. Meaning your body burns calories faster than you can consume.
3. There is no universal weight training program that is going to give massive results for every person.
To get the best results from a program, find a person with the same body as yours and start doing what they are
doing.While there are standard exercises that can build muscle, but there's more to muscle building than weight lifting.