There's also the link between T-therapy and cardiovascular problems. Some studies have found that men on T-therapy have few cardiovascular issues, while other studies point to the opposite. It appears that older men are particular vulnerable to heart attacks and elevated blood pressure. And in fact, the 2010 Testosterone in Older Men study had to be halted once these findings became apparent . The 209 men in this trial were an average age of 74 and were already diagnosed with high rates of chronic diseases like cardiovascular disease and diabetes.
Helpful article, however, I will have to disagree with your comment about sprinting. Sprinting is a maximal effort exercise which constitutes the body’s reliance on predominantly carbohydrates and not fat. The fast catabolism of carbohydrates causes the lactic acid build up. The maximal exercise will actually not burn any fat but will boost testosterone levels. Also, the exercise can produce increased muscle mass, which can increase resting energy expenditure. Since your body burns predominantly fat at rest this can indirectly help you lose fat weight. If a person wants to become more efficient in metabolizing fat and lactic acid, they should focus on long duration (greater than 30 minutes) and low to moderate intensity exercises (~20-60% MHR)