The trek to the lost Incan city of Choquequirao is one of the most difficult in Peru. From the town of Cachora, located 161km west of Cusco, it's an 18km walk to Capuliyoc Mountain, then down to Playa Rosalinas, where travellers camp for the night.
I'm 34 and have, up to this point, belonged to at least 15 gyms. I join. I sweat. I debate going to a class. I try swimming in an infinity pool and try again. I quit. Then, after a couple months of sloth, I decide it's time to join again.