My youngest son (17) swims three hours a day and has swim meets damn near every weekend. He's 135 lbs. of nothing but ripped.
Me? I've chosen the old fat and decrepid mode for the last five or six years. Shit's getting old though, something's gotta give. Got a road bike, got dirt bikes, got a Concept two, an elliptical, treadmill, spin bike, an unfinished workout area in the mancave.....everything except an excuse! Too much work. Finally getting a bit of a break from the killer workload and finding it difficult to get motivated to get back at it and into shape.
I was a college swimmer, even had olympic trails times - too bad on an off year. 12,000 calories a day, 10 miles of swimming per day, 4% body fat & couldn't possibly get over 165 lbs... Man did my weight explode the day I finished. Very hard to go from eating every thing you possibly can, to wattching your diet.
The upside, I could ride moto as hard as I wanted for as long as I wanted & never even get winded.