How much CO2 does a Human emit per year through respiration?

Question

Could we reduce our carbon footprint by doing less excersise?

Answer 1

About 365kg, apparently.

I would have thought that doing less exercise would require us to eat less - reducing our carbon intake, and balancing out the emissions.

Answer 2

That's not going to make any significant difference. CO2 come from processing food we eat. So eating less will produce less CO2 but it won't make any impact on our atmosphere.