I'm not a huge science sorta guy, but i found an explanation from Einstein on relativity in simple terms, something like:

"Sit a man with a pretty girl for 2 minutes, it'll feel like an hour. Yet sit a man on a hot stove for 2 minutes, and it'll feel like an hour"
-That's relativity

Time is relative to the situation, all a clock does is measure a concept.
So if you stay in that state you explained for say 10 years, you'd have hypothetically 'aged' less than if you would have doing strenuous exercise

hope that makes sense