How old am I? I would say I am any where between 7 and 20, I pass physical tests for normal people with ease, yet I have the wonder of a 7 year old. Am I happy with my body, yes provided it does what I ask, its getting a bit less co operative. Or is it, there has always been a battle to just sit on my arse!
Go snowboarding, run up that little hill and go red. Swim with the fishes, sleep out under the stars, do not buy that electric can opener.
Skip breakfast, unless its nails!
Adults forget what the floor is, they want seats, and posh ones, get on the ground, get on the sea, or under it, rough paths not easy roads, try a bit, stretch your self.
Think how your body can help you, it is your only real friend, unless you are very sick, it wants to help you. But sometimes do use a stick, beat yourself once in a while, you must be in control of your space craft. Set the Controls for the Heart of the Sun. Pipers at the Gates of Dawn, listen to your heart, and breath before you are listening to a wheeze, you're dying gasp. Too late, is too late.