Veritasium did a video on this. He lost around 250g each night, which is over half a pound. Some of that lost weight was CO2, some of it was water vapor and som

Veritasium did a video on this. He lost around 250g each night, which is over half a pound. Some of that lost weight was CO2, some of it was water vapor and some of it was sweat. https://www.youtube.com/watch?v=lL2e0rWvjKI https://www.youtube.com/watch?v=lL2e0rWvjKI