It is important to understand that there are different forms of cardio and you should make sure you are practicing both aerobic and anerobic cardio.  

Aerobic-taking in oxygen, so think more like steady state cardio.  Going for a walk, easy jog, low intensity workouts where you are able to talk during the workout.

Anerobic-is without oxygen, so think sprinting, HIIT workouts.  These are higher intensity workouts where the heart rate gets up and it becomes difficult to talk during the workout.  

You want to make sure you are practicing both of these styles of workouts to ensure you are working the heart effectively but don't do too much/or too long of the anerobic or your body could go into a heightened state.  (I highly recommend you take a look at our 30 days of hormone health program to ensure you are working out at the right intensity through your cycle to help with hormone health).

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