Although I never kept a log before this year, I’ve done 14,000 jelqs since Feb 1 and it is still difficult for me to control my erection level. I very often must stop every 10-20 strokes for 15-30 seconds to reduce my erection level and then continue. It gets easier as I progress through my workout and it begins to feel a little fatigue, and by the third set I rarely have to take breaks.
Kesman is right that it isn’t a sexual activity, but the physical stimulation is similar to sexual activity. I have decided that not everyone can control their responses as well as most. I think that I have a more physiological response than a psychological response, so it takes a little bit of strain to get it out of that mode.