[sheltgor]

Always found that strange as well. I've always loved being a runner in Seattle because its generally cool, cloudy, and often light rain. To me that's the perfect weather for a run since it prevents you from overheating or dehydrating as quickly, and, in my experience, the sun tires you out much quicker. I've always been confused about the fact that you see by far the most people out running on a hot, sunny day. Every one of them seems to be sweating bullets.

[sp332]

A lot of people aren't out running to run as fast or as far as possible. They're just out to enjoy the weather.

[bduerst]

A good rule of thumb is to assume that the temperature is going to feel 10 degrees (F) warmer when you're running or doing extended aerobic exercises outside.