Blistered feet, sore legs, dehydration, sunburn.
Salt in the eyes, chaffed thighs, and a blackened toenail.
Looking up and thinking "If I don't make that ridge in one hour I'm gonna be caught in a lightning storm..." and then pushing as hard as you can for an hour, lungs screaming at 13,000 feet.
You're starting to bonk, blood sugar dropping, legs going jelly-like, you crumple at a stream, drop your pack and eat some goo, wondering what the f#ck you're doing there when everyone else you know is lounging on couches. Your clothes are soaked from the rain and you still have 30 miles and 2 major passes to go...
By the time you're hitting the trailhead and savoring the thought of collapsing into the seat of your car your legs are getting so stiff you look like a zombie and you're swearing that you'll never ever do it again.
But within hours you drink your first iced beverage in days, eat a real meal, take a shower, sleep in the SOFTEST bed you've ever felt...and drifting off you say to yourself:
"F#ckin' A!!!! I can't believe I just did that!".
And in your own way you become a warrior and you know that you'll always be able to do it.