-to get the most out of your cardio routine, follow the FIT (frequency, intensity, time) principle.
Frequency: 3 x per week
Intensity: working between 60-80% of THR (target heart rate)
(Calculation: 220-age= MHR
MHR x .6 = lower THR range
MHR x .8 = upper THR range)
Time: at least 20 consecutive min with a goal of 40-50min.