It could be sweat evaporating which is cooling you down. Just bring a jacket or long sleeved shirt with you for those times you feel cool. Also you might need to be getting more electrolytes during your runs.
As for stretching during your run, some people just need to do that. Do some easy stretching before your run. If you need to stretch because you are cramping up then you are not getting enought fluid and electrolytes during your run.
Thornton Sparkers Team Leader
SparkPeople's Official 5K Your Way Walking Program Co-Leader
I long to accomplish a great and noble task, but it is my chief duty to accomplish humble tasks as though they were great and noble. The world is moved along not only by the mighty shoves of its heroes but also by the aggregate of the tiny pushes of each honest worker.
- Helen Keller
Don't look at life as "you have to," view it as "you get to." It puts the fun back in things.
| Pounds lost: 17.0