How do anabolic steroids increase muscle mass? Several ways:

1. Alter DNA Info: Anabolic steroids alter DNA information, making your muscles better equipped to manufacture more muscle.

2. More Efficient Muscles: Steroids make the body more efficient at gathering the nutrients to build muscle. Protein in the diet gets converted to muscle much more readily.

3. Block Muscle Breakdown: Normally, the body is in a constant state of assembling and disassembling muscle. On steroids, the tendency to break down muscle is reduced.

4. Increase Muscle Mass: Anabolic steroids increase muscle mass and decrease fat, even if an athlete is not exercising.