Sore Dick
When girls with braces suck your cock, it's pretty normal for your dick to get some bruises. Likewise, some girls tend to vigorously ride your dick and the side-to-side, front-to-back grinding motions tend to hurt your cock when those are forceful enough.
I've found that the best remedy here is to build calluses on your cock. When you're wanking simply flick your nails around your dick several hundred times on the regular. Calluses will also help desensitize your dick naturally making you last longer when banging pussy.
Since calluses are keratin, eating some of these might help in your keratin build up.
Simply put, half a dozen cock feet might do wonders for your half foot cock.
Stamina
Stamina can be conditioned. Jumping jacks are the easiest things to do to build up stamina right in the conforts of your room. Gradually build up your stamina starting with 5 sets of 20 jumping jacks and then 5 sets of 30 jumping jacks and so on.
Energy
I don't know what kind of diet you're having. So I'm making a guess here. If you're taking energy drinks like Red Bull or Monster, cut back on those. High sugar diets and drinks make you feel enervated and the cycle just goes on and on.
If you cut back on soda, high carbohydrate diets, ice cream, coffee with sugar, tea with sugar and so on, you'll feel a great change in your energy levels.
Sore Nuts
Do NOT allow fatties with big asses to ride your dick. The impact of those heavy adipose tissues repeatedly falling on your nuts will make your nuts sore and hurt a lot.
Erections That Won't Quit
http://en.wikipedia.org/wiki/Okra
Somehow, that veggie does the trick. Look at the nutritional value based on the USDA nutrients database. Half a dozen steamed fruits twice a week works for me. It might work fer yah.
