It's easy to focus your ab workouts on the muscles you can spot in the mirror. But just as important for core strength and overall function are the muscles we can't see in our own reflection.

By age 75, a noteworthy 50% of men develop an inguinal (groin) hernia. Although common, the cause of these hernias is unknown, and the only treatment is surgery to repair the weakened area. Even after ...

And planks. Six-pack abs are often held up as the pinnacle of fitness — if your middle shows those segmented muscles, you must be fit, right? Wrong. What looks like six abdominals is actually ...