I know I grew up being told that my muscles got sore because of lactic acid, which supposedly built up in muscles because you exercised anaerobically or just exercised beyond your body's ability to supply oxygen to your muscles. However, one scientist questioned this 100-year-old finding and spent his entire life trying to discover if that was true. It's not. It turns out lactic acid is actually the fuel for muscles to burn while in use. George Brooks had discovered several years ago that lactic acid is absorbed by muscles within an hour of exercising, so wasn't likely the source of muscle soreness, which shows up hours or days later. Let's hear it for his persistence!
Now get off the computer and go groove your body.
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