for a girl if she has rather large breasts then they bounce and it can hurt..but what about guys? I mean does you penis or balls bother you if you run? and does it also depend on sizes?
Most Helpful Guy
Depends on many things- support, position, duration, intensity, (certain, um, activity the day/night before). Briefs do help support better vs. boxers, but they too can get quite uncomfortable. If the running is more like a jog, it doesn't bother at all, though...
One of the many reasons I don't like running, actually... ;-)0