I bet you have heard of this countless time before but let me reiterate it again, eating diet is definitely known to affect sperm production. Try to eat foods with good amount of zinc, Calcium, vitamin D, Antioxidants, and various types of grains are good for health. Although exercise can not directly increase the production of sperm and semen, but regular exercise can help you to be healthier and fitter. Weight gain can reduce your testosterone level and causes imbalance of hormone in your body. So reduce your weight by exercising regularly. how to stop masturbating