Given the research, anabolic steroids may seem to be the "go to" drug of choice for teenagers who want to gain muscle mass and look like their childhood heroes. But there are other, also legal, options for adolescents who are looking to increase their size.

Diet

Probably one of, if not the most important pieces of a size gaining regiment is the one that is often the most overlooked. The old adage "you are what you eat" could not be more true when it comes to building muscle. By ingesting low-quality nutrients like sugars and sodium, the body will tend to carry a higher body fat percentage and hold more water weight respectively. By taking high quality proteins, carbohydrates, and healthy fats the body will produce more muscle building characteristics. The rule of thumb for gaining serious weight by means of proteins is 1 to 1.5 grams of protein for every pound the person weighs. This ensures that the body does burn energy from already stored proteins when the body is being involved in strenuous physical activity.

Supplements

Although not an exact science in itself, the supplement market can be a great resource for individuals wanting to obtain certain physical goals while still purchasing legal products. From weight loss, weight gain, increased muscle mass, to mental focus- practically any goal can be supported by products from reputable retailers. But there are also certain warnings and precautions to take when testing the supplement market waters. Pro-hormones are also a very popular supplements that can be currently be purchased legally. Some of these pro-hormones can act as strongly as steroids, and sometimes are nearly identical to anabolic steroids in their makeup. With no restrictions from the FDA, some pro-hormone supplements are not found out to be illegal until months, if not years after they have hit the retail shelves.

Physical Activity

It may go without saying, but if a person wants to gain muscle and get bigger they will need to lift; and lift big. The only way for a muscle to gain size is for it to be exercised and put under resistance. Strenuous physical activity, like weight lifting, is by far the best way to increase muscle mass. Other physical activities may help with toning and fat loss- like running, boxing, gymnastics, and yoga. Muscle building was once compared to the building of a callus. In order for a callus to get thicker, it needs to be put under stress so that it can heal itself by adding thicker skin onto itself. Muscle building is quite similar, and can be obtained by sticking to regularly scheduled and monitored activities, supplements, and diet.