VO2max is a measure of cardiovascular fitness, and many watches and fitness trackers can estimate it for you. Here's what you ...

Cold air can irritate the airways that carry air into the lungs, potentially causing symptoms like coughing, chest tightness, and trouble breathing.

Testosterone levels peak during male puberty and decline with age in both males and females. With low testosterone in males, you can have a decreased sex drive, trouble with erections, and low sperm ...

Experts say gait speed, grip strength, balance, and endurance are some of the strongest predictors of long-term independence.