Pls help me I feel very weak and energy less and my stamina is also exhausted whenever I do some physical activity like running or some other work which required stamina I get weakness and fainting like situation. Means I to say I want to join the gym but how could this possible becoz I feel very weak. Should I take any multivitamin. becoz I take proper food and adequate sleep but it does not working. I clearly explain to you that I masturbate from the age of 17 but frm last year I quit it but whenever I get night fall I feel more weak. Pls help me.