Proper Plank position?

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ShannonBEarley
ShannonBEarley Posts: 94 Member
edited February 24 in Fitness and Exercise
I am going to start a 30 day plank challenge. Can anyone tell me what the benefits of the different positions are? I have always just done it on my forearms, but I saw a picture of someone with their feet up on a step.

Any suggestions or advice would be welcome!
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