Feb 3, 2009 #1 S SteveA Member Joined May 20, 2008 Messages 42 Reaction score 0 Points 6 some extreme cardio tips thanks? i have been running in a gas mask to reduce my oxygen. its just that i seem to get a little gased when i grapple or box with someone
some extreme cardio tips thanks? i have been running in a gas mask to reduce my oxygen. its just that i seem to get a little gased when i grapple or box with someone