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Kaylend Manleyadded this to Men's Health and Exercise
11 Plank Exercises That Double as Cardio Moves

11 Plank Exercises That Double as Cardio Moves

Self - Amy Marturana, C.P.T.

Planks are known for their core-crushing abilities. Holding one will make anyone's abs tremble after a while. But some plank variations have another …

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