Spend some time lifting some weights and do some aerobic exercise (I walk three miles a day and do lift weights three days a week).
If you are over 55, understand that it helps if you are in pretty good physical shape. There will be times you may have to climb up on a high wing aircraft like a Cessna 172 to check the fuel in the tanks or add fuel to the tanks. You will most likely have to pull the plane out of a hangar or parking as well as put it back. Spend some time lifting some weights and do some aerobic exercise (I walk three miles a day and do lift weights three days a week).