Considering that warm air rises.....?

Question

if a man builds up gas and the ambient temperature is less than his body temperature, does he weigh less than when he does not have gas? If he ate a pound of beans, would he weigh more or less? Going further, if one ate enough gaseous food, would they ultimately float off into space?

Answer 1

Haha, not really. The gas still has the same weight as the materials that it originated from, and these can't be any measurable expansion due to the pressure of the gas. Until that mass leaves the body, the man's overall weight will remain the same.

Answer 2

Midknight, thats not true at all. You could eat solid hydrogen, and stay on the ground, but in gas form, it would want to float up beacuase heavy and more dense things want to get to closer to the earth because of gravity. So in a sense, that could happen, but it never will, lol.