So my wife stumbled upon this fact online, even as a Biology major I never heard such a thing, tell me your thoughts.
Overly intense exercise (excessive exercise may lower your sperm count by producing higher levels of adrenal steroid hormones, which lower the amount of testosterone in the body. This testosterone deficiency, in turn, decreases sperm production)
Another factoid was on steroid use, shrinkage of testicles, etc. I can see that, but not this one..