Hello Sumit, Hastmaithun ek safe /surakshit tareeka hai apni santushti karne ka. Isse koi nuksaan ya beemari nahin hoti. Yadi chahein toh bahut see activities hain, jinmein aap samye guzaar sakte hain jaise ki khel – games, gym ya koi hobbies… ok? http://lovematters.in/hi/resource/men-masturbating Aur ling ka size badhane ka koi bhi tarika mojjud nahi hai. Aap Ling ke size ki sahi jaankari yahan se hasil karo : https://lovematters.in/en/resource/penis-shapes-and-sizes