[Curtis Gibbs]

Try some jog/sprint intervals. ever 30 seconds sprint for 20 seconds then slow it down, wait thirty seconds, sprint for 20, slow down, wait thirty ect ect for say 5 rounds at 2-3 minutes each with a 30 sec - 60 sec rest. got my cardio up huge at only 3 days a week. With in a month I could out gas 3/4 of my boxing club