I use my JL Pro 1S in church, at work, or when I feel like it... during siesta naps in the basement parking so I don't have to turn on the car A/C or have to use it longer than necessary.

Although we have A/C at work, I often take the stairs going up. But by the time I get to my desk, I'm a little short of breath. The fan helps a lot to cool me down.