An eight-ounce oyster has 18 grams of protein — making gains easy while upping your t-levels. Oysters are rich in zinc, a t-boosting mineral. From food, you get about 10 milligrams of zinc each day, but the body only absorbs 2-3 milligrams of it — putting you at risk for a deficiency. The common cold is actually a symptom of low zinc levels along with a low sex-drive, which is an indication of low-t levels. When low zinc levels are present, the pituitary gland limits the release of the luteinizing and follicle stimulating hormones; they are responsible for triggering T production in the testes. This then decrease the amount of androgen binding sites and free testosterone in the blood stream.
But I'm not more aggressive—a behavior change often tied to testosterone. That's not surprising to Robert Sapolsky, ., a neuroendocrinologist at Stanford University and a leading researcher on stress and behavior. "It's really not the case that testosterone 'causes' aggressive behavior," he says. "Instead, it makes the brain more sensitive to social cues that trigger aggression. And in support of that, a guy's testosterone level isn't a very good predictor of how likely he is to be aggressive."