Suicide by fapping

Disclaimer: I'm asking this question purely out of curiosity and do not have any intentions of carrying it out.

In theory, how many times a day would you need to fap in order to get yourself killed?  Assuming you're eating enough food, getting enough sleep, breathing acceptably fresh air, living in an acceptable climate, etc.?

I heard if you fap enough times blood comes out. Dunno how many.