Level: Intermediate
Program: 7 Day Core Challenge
45 sec work/ 25 second rest

-Overhead sit-ups
-SL knee to Chest Crunches
-Plank to Lunge Twists
-Russian Twists
-Windshield Wipers
-Candlestick Crunches
-Elbow Plank
-Left Plank
-Right Plank