When two or more anabolic steroids are used at the same time, it is called "stacking". The time period in which a body builder or person uses these anabolic steroids is called a "steroid cycle". Athletes stack anabolic steroids with other drugs to help maximize the results of their cycle. It has been shown that steroid stacks can cause an even more dramatic effect on the users muscle, than when taking only one type of steroid. Different anabolic steroids have different effects on the body, so when two different steroids are introduced (stacked) together, often times you will see the muscle gaining side effects of each different steroid! These steroid cycles may also include taking one particular anabolic steroid at the beginning of the steroid cycle and finishing up with a different steroid at the end, to better enhance the users desired result. Steroid stacks have been used for years and have proven to be a more effective way to build quality muscle than when using only one type of steroid. One very important thing to note: when using more than one anabolic steroid in a stack or cycle, the risk of harmful side effects increases. Within a steroid cycle, the users will often stack other non-anabolic drugs into their program to help minimize these steroid side effects.