The fountain of youth actually a swimming pool?
An exercise specialist believes it's possible to swim yourself young.
Joel Stager, an Indiana University exercise physiologist, studied the blood pressure, muscle mass, blood chemistry and lung function of 200 over-50 swimmers at a U.S. Masters Swimming championship.
The swimmers' bodies were functioning at levels comparable to much younger people, he found.
Stager says any amount of swimming is beneficial, but swimming about two to three miles - about 3,500 to 5,000 yards - three to five times a week could actually postpone the aging process by decades.
"We're starting to find out that a lot of the decline is probably related to a decline in activity rather than aging per se," Stager says.
When it comes to energy drinks, proceed with caution.
That's the message from Dr. Maher Karam-Hage, a University of Michigan addiction specialist.
and Monster shouldn't be mixed with alcohol, used by kids or consumed before strenuous exercise, he says.
Most energy drinks contain caffeine, about the same as a cup of coffee or two cans of Coke, and taurine, a sulphur-containing amino acid often marketed as an antioxidant, anti-anxiety treatment and heartbeat regulator.
Some European countries have restricted or banned the drinks.
Energy drinks are different from sports drinks, which tend not to have caffeine or taurine.
Karam-Hage says its a myth that caffeine can make someone alert after drinking.
Energy drinks can cause children to be hyperactive, and they can cause dehydration or even collapse if consumed before exercising, he says.