The best vitamins for women should perform important functions like strengthening the immune system, slowing the aging process, balancing the hormones, and boosting energy levels. Women need a certain amount of vitamins and minerals different from men and vice versa.

Creatine is a naturally occurring chemical produced in the human body. It is created in the liver and kidneys from the amino acids L-arginine, L-methionine, and glycine. Skeletal muscle contains nearly 95% of all the body's supply. Though it is found in fish and meat, it is a popular supplement for athletes because once converted into phosphocreatine it is stored in the muscles and used for energy. Bodybuilders especially appreciate it because during short bursts of intense exercise, like weight lifting, phosphocreatine turns into ATP, our body's fuel.

The digestive system is a group of organs that break down, digest, and excrete wastes. The organs that make up the digestive system are the mouth, esophagus, stomach, small intestine, large intestine, rectum and the anus. Parts of other organ systems play a major role in the digestive system too, like the nerves and blood.

Confused by the terms carbohydrates, proteins, fats? What's a carbohydrate? What food is that? This article from http://www.ectomatter.com makes sense of it.

EVERYONE who wants to get leaner should read this article. Yes, I know it says "Fat loss for beginners," but sometimes we veterans forget what we once knew or we don't practice what we now know. If you're a beginner, this will be an introduction. If you're experienced, let this be a reminder.