32 rounds- 20 seconds on, 10 seconds rest of:
8 rounds Back extensions (supermans)
8 rounds Push-ups
8 rounds Butterfly sit-ups
8 rounds Squats
There is no rest between exercises.
Compare to 04.29.14
Post total reps from all 32 intervals to comments.
90 DAY CHALLENGE XI: DAY 17
fruit or veggie snacks