You are not having any bad habit as you call it. Loss of semen does not lead to weakness whether it is due to nightfall or masturbation.. Find out other causes for it. Take goid diet high protein and sleep well. Also Exercise.

Hi If you are referring to masturbation, it is absolutely normal & there are no side effects. If you think you are into it excessively so much so that it starts to become a priority & there is significant impact on other areas of life , then you may need some help. If not, just relax, focus on regular physical exercise, yoga, meditation & good lifestyle choices. Your weight loss could be due to a different physical health reason or even anxiety / depression. Please consult your physician or a Psychiatrist. There is no need to feel embarrassed. It is a very common issue Doctors deal with. Best wishes