For all my years of gear usage I was always lower test guy(around 200-250) and was always told i look much younger (10 years then I am). Also have noticed that guys on higher test look much older. Do you think that this has to do with a fact that testosterone by itself lowers collagen. That might also be the reason why on primo you have that youth glow in skin due to increased collagen synthesis by primo. Your toughts and real life application guys?