Wouldn't it be nice not to grow old? Bodies would stay skinny and fit forever, and mental skills would never fade away. But men and women do age. In fact, by the time a person hits his or her 40s, belly fat builds up, while memory skills fade away. Yet, the best HGH and testosterone injections on the market can keep the body, as well as the mind, totally refreshed. Real HGH and testosterone therapy is known to speed up a user's metabolism. At the same time, brain power can get better than ever.