Originally Posted by
neilfein
I've heard that it's harder for your body to absorb oxygen when the air is very cold. Anyone know if this is true?
No, i don't think that is true... in fact the air is denser when it is colder(at the same altitudes)... so there is more oxygen in your lungs, though breathing denser air may be more work. This is why turbo-charged cars have extra pep in the cold, denser air!