To ensure your sperm army is ready for action when you need it, kick those butts. According to the American Society for Reproductive Medicine, smoking cigarettes not only whittles your sperm count, it also causes abnormalities in their shape and function. Research shows that free radicals from smoke can damage up to 40 percent of your sperm. Even if you don’t light up, you’re likely exposed to these ball busters through second-hand smoke and pollution. Fight back by filling your diet with antioxidants. “Just two Brazil nuts provide the recommended amount of selenium, which helps prevent cellular damage,” says Peggy Kotsopoulos, nutritionist and host of Peggy K’s Kitchen Cures on Veria Living. It’s not a bad idea to slurp a few oysters as well. A study in Nutrition Research states that seminal zinc in nonsmokers positively correlates with sperm count.