Interval Run 2

This can be done as an outdoor run with your phone (assuming you have a cellular connection) or on the treadmill.

Time: 45 Minutes 

Do your best and know that you can always WALK the recovery (even if you are an intermediate/advanced runner.) The goal is to push the ON hard and fully recover.

If you run outside, be sure to PLAN your course and turn around at the halfway point in time.

Recommended: Bring water or set a water bottle down along your course.

If you are an intermediate/advanced runner, you can slow jog the recovery periods (or walk).