5 Things That Happen When You Plank Every Day DavidWolfe.comSeptember 8, 2016 'Lay flat and hold myself up with my arms, you say? I could do that, like forever, man!' At first glance, the humble plank seems quite simple and easy. But o... FeaturedHealth & LongevityInspirationLifestyleMotivationResearchSelf-Help 0
