Originally Posted by Expatriate
Basically, we spend all but about 8 hours of our day upright, and even for those 8, we're not bent over (I hope anyway). So flexibility is very important when it comes to applying power while bent over your bike.
Here's something I only found out a coupla weeks back. During the foetal? stages of development we don't have any defined muscles, and what ends up being calves, hammies, back muscles, neck muscles, etc starts out as a single band that runs from the front of your head, down your back, and under your feet. So you can get sore hammies from bad shoes, or tension in your forehead! How weird is nature?