Lack of sleep harms almost every system in the body: From concentration and memory to hunger hormones, metabolism and the ability to cope with stress.

Testosterone plays a critical role in men’s health, influencing energy levels, muscle strength, mood, and sexual function.

This article was reviewed by Felix Gussone, MD. Testosterone does more than drive puberty. It influences drive, mood, motivation, and aspects of overall energy. Produced mainly in the testes, this ...

Jillian Kubala, MS, is a registered dietitian based in Westhampton, NY. Jillian uses a unique and personalized approach to help her clients achieve optimal wellness through nutrition and lifestyle ...

I'm a Fitness & Nutrition writer for CNET who enjoys reviewing the latest fitness gadgets, testing out activewear and sneakers, as well as debunking wellness/fitness myths. In my free time I enjoy ...