First, be cool. Sperm like to be cooler than the rest of the body. When you put your laptop on your legs, for example, it heats the thighs and testicles five degrees above sperm comfort level. Wi-fi signals and radiation can also be bad in that area. Sperm counts also can go down in men who perch their laptops there 2-3 hours a day. So no laps for laptops. Forget "hot yoga," too.
Eat your veggies. Diets high in antioxidants and deeply colored plants (beets, kale, blueberries) improve sperm motility (swimmingness, wiggliness).
Get moving. Get off the couch. Exercise, exercise, exercise, Mills says.
Coffee! Coffee can be good for sperm--but not too much coffee. Two-three cups a day. Not six--that much has been shown to impair fertility.
C'mon, men. Now is the time to do your part--she will undergo the labor, so you are getting off easy.