Things I have learned

Things I have learned so far:

1. The mood I'm in greatly affects the quality of my run, and vice versa.
2. The right music can drastically improve a run.
3. An article of clothing that is very comfortable on a 3-mile run can chafe in unexpected places on an 8-mile run.
4. I can run in 54 degree weather wearing only a T-shirt and shorts and not freeze my ass off.