Bored with planks? This video offers endless combos for working your core, thanks to trainer Tony Alonso:

Bored with planks? This video offers endless combos for working your core, thanks to trainer Tony Alonso:

Originally shared by Lifehacker

Bored with planks? This video offers endless combos for working your core, thanks to trainer Tony Alonso: 

Check it out here, or head here for more: http://lifehacker.com/change-up-your-ab-workout-with-these-plank-variations-1733297138

http://www.youtube.com/watch?v=0QQTpJb5pxM

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