Native to north-central and eastern China, Kiwifruit is rich in vitamin C and E, and an honest source of dietary fiber.
Studies on vitamin C have shown to preserve testosterone concentrations, also as reducing levels of circulating cortisol.
What does this mean for you?
Well, increased levels of cortisol are released within the adrenal glands during instances of stress. Because testosterone is released within the adrenal glands also, this will have an immediate influence on what proportion of testosterone the adrenal glands are pumping out.