Science has confirmed that exercise is good for the brain. It increases blood flow, inhibits stress hormones, and stimulates the release of “feel-good” endorphins. One way exercise is thought to yield ...

Like all great villains, lactic acid has been misunderstood. We’ve been blaming it for the pain we suffer during intense exercise for more than two centuries. There’s nothing worse, we say, than the ...

People often discuss the importance of removing, or “flushing out,” lactic acid from the blood after intense exercise to reduce muscle soreness, speed recovery, or boost athletic performance. After ...

As a student competing in track and field at his Parlier high school, Robert Leija was obsessed with how to improve his performance and, in particular, prevent the buildup of lactic acid in his ...

A volunteer is monitored after being given a large dose of glucose to determine how well people switch from fat to carbohydrate metabolism as they age. In the tests at UC Berkeley, subjects had their ...