R RED New member Feb 7, 2011 #1 Huge field behind my house, always walking in it.. was gonna get a mountain bike tommorow, just curious.. would that be better cardio then walking? or is there even really a difference?
Huge field behind my house, always walking in it.. was gonna get a mountain bike tommorow, just curious.. would that be better cardio then walking? or is there even really a difference?
