Well my question is about size, yet its a bit diffrent from others. My size used to be 5 inches a few moinths bac. i started a strenous physical exercise programme and i had a lot of weight loss, due to which i meansure my length half an inch more than before. But I also feel that I have a bit if Girth reduction after those exercises, presently i measure only 4.2 inches at girth(circumference)

I wanted to ask if this girth(circumference) is sufficient for normal sexual functioning?

Regards