I'm 36 and have never had my testosterone levels checked. I'm guessing it's fine due to my general age, diet/exercise, and energy levels. Over the past few years, there has been a huge increase in OTC testosterone boosters and also prescribed from doctors. My perception is that a portion of this increase is for men who really need it and a portion for those that don't. For those that don't, they do receive benefits from taking testosterone supplements at the huge risk of negative long term effects. I plan to test my levels as I get into my 40s. I've seen a wide range of "normal" levels (think it's 300 - 1,100 or something). If I'm at 600 (for example), is it better to get to 1,000? I'd also like to focus on naturally improving levels so that I can avoid artificial means later in life. Over the past year, I've started doing a 24 hr fast about once/month because of the alleged health benefits (including the claim that your body starts to produce more testosterone). I've read a few other things you can do but not sure which ones have the most impact. Also, I know testosterone is less important for women but still plays a role. Any feedback on this area for men vs women is also welcome.