Well I'm a 23 year old male. I have this problem I have to wait 3 hours after I ejaculate for the first time. The problem comes because before I used to wait 15 minutes and I could have sex up to 3 times with 15 min rest. I don't know if it's because I gained weight or maybe I have a condition. I don't want to be like some people here that have sex like 6 times straight but I want to see if there is anybody that had the same conditions but got better. One reason that I think is that before I used to weight 175 now I weight 200 lbs. How much does your weight affect your stamina?