#4 Garlic
Image Source: David Goehring
You may not make a lot of new friends if you decide to chomp on garlic in its natural form, but fortunately there are supplements available that can help take some of the social stigma out of enjoying the health benefits of garlic. Garlic helps keep cortisol under control, and since cortisol is a hormone that competes with testosterone, the end result is higher levels of testosterone.
