Testo XXL Man with TestosteroneAs you get older, the level of testosterone begins to decrease in men. The loss in testosterone levels and the onset of symptoms related to Testo XXL it, is a slow process that begins around 30 years. A decrease of 1-3% per year, is normal, which means a Testo XXL small portion of around 20% by the age of 50. As soon as the man reaches 80 years, the amount of testosterone he has left is the same as that of a 10-year-old child.