Quote:
Originally Posted by
Garage/Surf Rock 
I think regular exercise, of an enjoyable kind, keeps the face youthful. Ever notice how a lot of pro athletes look pretty smooth-faced into their older years?
In some televised situations, such as broadcasting, they wear makeup. Which isn't to say that exercise cannot have an anti-aging effect on the skin -
it can. One would expect that being a professional baseball player or pro soccer player (with less protection and free-radical oxidation damage from running around) negates that effect.
Fatigue that is associated with dark circles might indicate dehydration, which is very common. Likewise, sleep-related dark circles can point to it, too. A dehydrated waking state is the norm. Sinus congestion can lead to fatigue, too.
Hats and sunglasses also protect the skin under the eyes.