Well, really hell no! I just got almost fainted during my Taekwondo (a martial art) session this day. Hell, I felt so weak and exhausted. I was totally confused about what hit me. I did eat my breakfast, and I remember of having no recent illness. Here are my suspects: 1. My feet - -edit- 3 days ago, I jogged around the campus for 3 kilometers (1.86 mi) for the first time. It fatigued my feet, and even now I kind of wince every time I go down a stair 2. Masturbation - I jerked off 2 hours after I jogged (it was then night) What do you think? There's something I read that I shouldn't be doing any sexual activity prior? (but I can't remember anymore if before or after the --->> ) to any strenuous exercises Do someone has a similar experience? What can you say?