Day ONE - Perform Plank 1 - Elbow Plank for Five Rounds of 20 Seconds Each, with a 10 Second Rest Period Between Rounds

Day TWO - Perform Plank 2 - Dolphin Plank for Five Rounds of 25 Seconds Each, with a 10 Second Rest Period Between Rounds

Day THREE - REST DAY

Day FOUR - Perform Plank 3 - Straight Arm Plank for Five Rounds of 30 Seconds Each, with a 10 Second Rest Period Between Rounds

Day FIVE - Perform Plank 4 - Birddog Plank for Five Rounds of 35 Seconds Each, with a 10 Second Rest Period Between Rounds

Day SIX - REST DAY

Day SEVEN - REST DAY

WEEK TWO, REPEAT ABOVE ROUNDS.  TO CHALLENGE YOURSELF, ADD 5 MORE SECONDS TO EACH ROUND!