I hiked up to the top of a mountain in New Mexico once. It really didn’t seem too hard getting up there. I had some great views from up there. But then I had to hike back down. That was sheer torture. The muscles in the front of my legs just weren’t ready for something like that. The next day it was almost impossible to walk. The funny thing is that a few days later the memory of the pain started to fade and I wanted to do it again.