As a keen cyclist that trains with a powermeter, there are very few people on the planet that can produce 500W for an hour, more like 1 minute for mere mortals.

As a keen cyclist that trains with a powermeter, there are very few people on the planet that can produce 500W for an hour, more like 1 minute for mere mortals. I think 150W for an hour would be more reasonable for a typical person, even then you're going to get pretty sweaty.