[Jeff Fisk]

Exercise is the fountain of youth. 80% of it is mental, too. To have the fortitude and attitude to maintain your health and fitness year after year is hard work. It may or may not seem hard, but you are putting in time on your biological clock to get more time out of it. I live the SEAL ethic everyday. At 36, I teach SEAL muscular strength and endurance training outside 5 days a week to people searching for the way. It unlocks doors of energy they never knew they had.
By the way, use it or lose it is right. So if you keep doing speed, agility, and power training up into your years, then do you preserve a percentage of those fast twitch fibers? I'm gonna find out. Keep it up, you are inspirational.