Also, to get the best possiblefat burning cardio you need to keep your heart rate at between 60%-80% of your max for atleast 20 minutes. To figure your max heart rate take 220 and subtract your age. For examples a 22 year old would take 22 from 220 that would be 198. That's their max heart rate. To get their fat burning cardio find 60% and 80% of 198. That would be between about 120-160 beats per minute. Just take your 10 second pulse and multiply by 6. Hope that makes sense. Good Luck!