The Muscular Challenges of Running

When you finish an ultra endurance task what does your muscle look like, and how does it function compared to before? What is the accumulated load of having done that task duty? And obviously, cycling even 16 hours. Is probably less damaging than running for because there's no impact it. But at teast hes tis tese are still factors. So that's nearer muscular. Then then there would be a category of a mechanical which are things you don't often think about. Blisters, that's not a challenge. If you're running a 15 hundred, it's a challenge fo o,. Running a hundred miles with wet socks, od times. For cyclists at saddle sores and lower