Originally Posted by kalelvis
The idea of Superman expelling a long term wind in line with what we saw from the kryptonians in Superman 2 is an absolute impossibility.
Since Superman's physiology does seem similar to ours, there is a precedence for increased long capacity in regular humans as evidenced with free divers. They use a process of gulping air that I believe is called lung packing. This allows them to hold their breath for far longer periods than "normal" humans.
So, it is conceivable that Superman, with preparation could definitely pack in far more oxygen that a human because his lungs would be able to handle a far greater level of pressure. Pressurized air does dramatically cool but I would rather not see extended superbreath or freeze breath in the MoS/DCCU movies.
I want freeze breath!!! the oxygen is cold... and if his lungese have the capacity to hold the oxygen in low temperatures.. we can see this happening...