For as well studied as it is, Testosterone is tough to find solid guidance on. I recently learned that different countries have different ideas of what the “normal” range is. The US says 300-1,000 is normal, while apparently Europe says 250-836 is normal. Personally, the difference between 836 and 1,000 seems quite substantial to me. This is for men, of course and I suspect SOME of the motivation is to deny TRT to people. I was in the low/normal range, and a few weeks ago I started taking 200mg of Testosterone Enanthate per week. It made a difference pretty quickly. Not packing on muscle, but just overall feels and motivation. The downsides for me have been hunger, water retention, and even though my libido was plenty healthy for a 46 y/o, it has gone through the roof. Once I get my new blood work I may go up. As tempting as it is to blast 500mg a week, I could definitely see it making me want to punch holes in walls.