Dear service user, Thanks for contacting Healthcaremagic. I have gone through your question and understand your concerns about penis shape. I can understand that you attributed it to masturbation. You also attributed night falls (night emissions) to masturbation. I will guide you about both these concerns. Masturbation in private or with a partner is considered a normal and healthy part of sexual enjoyment. Masturbation is not a disease hence no adverse effects. It neither causes change in penis shape nor night emissions. Masturbation itself does not cause erectile dysfunction. The width and length of penis vary from one individual to another. The normal length of vagina is about six inches. Only outer one third and the front wall of vagina have nerve fibers and hence sensitive to stimulation. Rest of inner two third is largely insensitive. So, just entry (does not matter any direction) followed by continuous movements is enough to arouse the partner. Night emissions or ‘night ejaculations’ are normal physiological events. Semen is being manufactured by genital organs continuously; it has to be expelled by some means. This situation is just akin to a glass of full water to which you add more water, with the logical result that it overflows. If one neither has sex nor masturbation for long time, semen gets expelled in the form of night emissions, which is normal. Go ahead, wish you happy sex life. Warm regards.