Plank Challenge Chart Print Out. If You Want Strong, Tight Abs, Get The FREE PDF Chart Now! The plank challenge can be a fun way to increase your core strength and endurance.
Click here for a printable PDF of challenge and get at it.
Keep track of your progress with this print-out calendar.
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The plank workout is fast, easy and you can do it at home! This Plank Workout Challenges Every Muscle and You Can Print It. The plank (also called a front hold, hover, or abdominal bridge) is an isometric core strength exercise that involves maintaining a position similar to a push-up for the maximum possible time.