Warm up question.

Can I put a warm/hot fan in front of my penis for warm up/warm down? Thanks

The heat will not penetrate the tissues of your penis very much. It would be a very inefficient method of warming up. If you don’t have an IR lamp or microwaveable gel pack, the hot wash cloth method is cheap, and effective. Just keep a bowl of hot water next to you to keep the cloth hot. The rice sock method is better still.

Hmm, conduction vs. Convection vs. Radiation.

I’d say no to the fan, air just won’t warm up the tissues like direct contact from a rice sock or a warm cloth.