Like most Hollywood actresses, Angelina Jolie has an intense fitness routine to keep her in shape. Recently, however, the star's punishing workouts have been attributed to the bulging veins in the star's arms, wrists and finger.

It boils down to this: if you don't eat enough, and you workout like crazy, bad things will happen.

According to Steve Mongey, head trainer at a posh West London gym, "If you don't keep your eating up and do a lot of exercise the fat gets stripped away and the veins become exposed."

This isn't to say exercise -- even the fanatical exercise that stars like Jolie engage in -- is bad for you. But if you are going to push yourself, make sure the body has the fuel that it needs. If your fitness routine isn't keeping you healthy, what's the point?