Great topic. Often wondered myself just how many of these talkers could back up their words with action.
Mine is simple. It's about creating a lifestyle that envelopes you in health and fitness, related activities and vacations, and constant study and research. Once it becomes part of your life, you never have excuses for why you missed something. This has been my personal lifestyle for at least 20 of my 40 years here on earth.
Routinely and habitually, I'm in the gym anywhere from 3 to 5 times per week. A 1 to 1 1/2 hour work out is split up between weight training, shoulders, legs, cardio, and abs. The cardio is on an eliptical trainer, and the abs are done on a Life Circuit ab cruncher where I cycle about 13,000 pounds in a set.
Then, 3 1/2 months out of every year I'm in the woods bowhunting. Call it death from above. Ninja in a treestand. Vacations are a mix between commando backpacking in the Rockies, backcountry skiing, mountain biking, and scuba diving.
The range time is mixed into the rest of my busy life. Usually in the middle of the week when nobody is around.
Exercising the brain is almost as important as the body. I read about 4-5 books a month.