Today I wasn't exactly up to going to the gym. I was, until something strange happened at the end of my work day that left me feeling upset and put me in a funk. But I did my best to put that aside and headed to the gym anyway. As I'm still feeling sore from the two classes I took yesterday, I decided to do a quick treadmill workout before meeting up with my friend for dinner. When I first got on the treadmill, I didn't have a plan in place. I walked for two minutes at a very slow pace to warm up. Then I upped the speed to do a slightly faster walk. While I was walking I started wondering to myself if I could manage to run on this thing, so at the five minute mark I decided to give it a go. I ran for a full minute then slowed down my speed back to a walking pace. I couldn't believe it, I actually wasn't winded and I considered running for a longer period of time. Not wanting to gas myself out, I decided walk for two minutes and then switch back to running. A...