Dear Welcome to HCM We understand your concerns I went through your description. I suggest you not to worry much. Masturbation is not a sin. Everyone masturbates in their younger age. Even animals masturbate. Moderate Masturbation at young age cannot harm your health. But anxiety and apprehension associated with negative and unnecessary thinking can have negative impact in health. I sincerely advice, your body condition is nothing to do with your masturbation habit. To gain weight, you need to be happy and eat good food. You are already 22 and increase in height may not be possible, still you can try with some exercises. You might need psychological counseling., I am more than happy to provide telephone psychological counseling through healthcaremagic. Contact me through customer care, www.healthcaremagic.com. Hope this answers your query. Available for further clarifications. Good luck.