These supplements are a new technology and many are being created every day. Also each supplement is being researched continuously to see which of them are harmful for your body. I will discuss a few of these supplements and there positive and negative effects on the human body.
A very popular muscle-building supplement is creatine. Creatine is formed in your body from the three amino acids (glycine, arginine, and methionine). Once this creatine is synthesized, it is transported to the muscle, heart and brain, where it is used as an energy source by the body. (bodybuilding.com) When performing vigorous activities your muscles get tired and will not perform as well becoming fatigued. Creatine gives your muscles more energy allowing you to perform more of an activity before your body experiences fatigue in your muscles. This will allow an athlete to run faster longer, and perform longer. Basically, it just takes longer for your body to get tired. When using creatine to build muscle, it will help to increase muscle mass. Because of the fact that you can perform activities longer, a body builder can perform more repetitions when lifting weights. This causes the muscle tissue and fibers to break down more. The more you break a muscle down, the bigger and stronger the fibers and tissues grow back. Over a period of time this will cause a great increase in strength and size. Research shows that creatine will improve high power performance during a series of repetitive high power output exercise sessions. The negative effects of creatine are possible muscle cramping and strains in muscles, and increased chance of heat illness. (creatinemonohydrate.net) The bad thing about creatine is there have only been studies done for ten years. Therefore nobody knows what the long-term side effects are. A research team from Pennsylvania University experimented with a twelve-week program of creatine supplementation combined with a weight-training program.