The plank looks pretty straight-forward, but when done correctly, your core (and entire body) should be on fire.
The post How to Plank appeared first on Under Armour.
from Under Armour https://ift.tt/2vwkuqD
The plank looks pretty straight-forward, but when done correctly, your core (and entire body) should be on fire.
The post How to Plank appeared first on Under Armour.
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