I have a few questions regarding cardio.
For your body to start burning fat you need to raise your heart rate 65%. is that true?
If so then would raising your heart 70% burn more fat faster?
Should you have a protein shake after a just cardio session? I was thinking maybe half a shake.
What do you think about doing 20mins of cardio before a workout and then 20 mins after a workout?
I can only do cardio for about 20 mins then I become really bored and must do something else. Does two 20 min cardio session equal one 40 min cardio session.