The hormone testosterone is also known as the'male' hormone. It's a chemical in our bodies which increases our sex drive and testosterone is responsible for making our muscles bigger, stronger, more athletic, faster and stronger, and stronger, longer. Testosterone is a natural product in your body. When you eat a lot of food, it's converted into the hormone testosterone. This means that your muscles can grow and get bigger without having to increase your calories and your metabolism. It's really the most important hormone that you need to be on and increase. Some of the most effective testosterone boosters are the ones that will increase your testosterone levels by 1-3% each month. These products are not all equal. Some have the least amount of side effects. Others have the most. Some are cheap, and some are expensive. You have to decide for yourself which one fits your personal needs the best. Some are natural, some synthetic. And some do more for you than others. I don't know about you, but I get a little bit confused when a doctor tells me to "take 1,000 milligrams of testosterone per day." I think the reason is that I just haven't been around enough testosterone to make an accurate comparison.