Dear Welcome to HCM We understand your concerns I went through your description. I suggest you not to worry much. Your masturbation habit is normal. Masturbation is not a sin and it cannot drain your health in your case. You are masturbating just once a day mostly. That is quite healthy. But the anxiety associated with the masturbation practice might take its toll. I think you are anxious about masturbation whereas there is nothing to be anxious about. You are thin becuase of your body structure or lack of nutritious food. Definitely not because of masturbation practice. Therefore, leave the anxiety about masturbation away and enjoy the life. Hope this answers your query. Available for further clarifications. Good luck.