Natural Testosterone Boosters – Egg yolks are very good for increasing testosterone levels because they contain some of the most important building blocks for testosterone. Testosterone is made from a number of building blocks, one of which is cholesterol. There are a good number of misinformed people who do not eat eggs for fear of cholesterol damage to their arteries. Actually, your liver produces between 85 and 95% of all the cholesterol found in your body. Aside from that, egg yolks are full of vitamins and minerals that are good for you.