Testosterone is a male hormone which is very important factor in building muscle mass. Also, it is very important to have normal levels of testosterone for energy, libido, and athletic performance. When it comes to muscle building, boosting testosterone levels has a big effect on muscle growth and also is enhancing fat burning. So, besides muscle mass gains, testosterone is also important for reducing levels of body fat. The problem is, testosterone levels are declining from the early 30s for most men. But, natural testosterone level is highest at the early 20s and at that age you can build muscles faster and easier.   Luckily, there are ways to raise testosterone levels naturally and to achieve that you have to focus on training routine and diet plan that stimulate testosterone boost. I don't advise consuming steroids, it is better to naturally raise testosterone levels with proper diet and workout routine for a long-lasting increase. Steroids are havi...