I'm 13 and from Japan. I want to why I feel week after masturbation and also if there is limitation to frequency of masturbation.

Chao

Firstly, if you are 13 yrs old, i think u r too young to start masturbating. Wait for a couple of years. The weakness seems more age-related. Concentrate on other activities like sports/reading etc to keep your mind off sex and masturbation.

there is no direct evidence to link masturbation to any kind of "weakness". just as one would go to the bathroom daily, and not really feel "weak" thereafter. However, just like a bout of diarrhoea, where there is excessive bowel activity, weakness is the norm, similarly, if u indulge in masturbation only when there is a specific urge, and not as an hourly hobby activity, there should be no weakness or any other problems.