I've been an athlete most of my life. Playing soccer through college, coaching for 25 years, running ultramarathons, logging four or five miles most days. With all that going on, I thought I understood my body pretty well.
Then I turned 40.
My body started telling me in no uncertain terms that I did not, in fact, have it all figured out.
Not all at once—that's not how it works. The signs were gradual at first: recovery took a little longer, my energy wasn't as automatic as it used to be. I'd eat the same way I always had and feel... off.




















