![How to do a plank: A fitness instructor demonstrates several varieties and explains why they're a great core workout | PhillyVoice How to do a plank: A fitness instructor demonstrates several varieties and explains why they're a great core workout | PhillyVoice](https://media.phillyvoice.com/media/images/051312_Plank_Core_Workouts.2e16d0ba.fill-735x490.jpg)
How to do a plank: A fitness instructor demonstrates several varieties and explains why they're a great core workout | PhillyVoice
![Fit woman working on abdominal muscles doing plank exercise, core workout at home. - Valerie Orsoni, coach, auteur, experte en nutrition et fitness Fit woman working on abdominal muscles doing plank exercise, core workout at home. - Valerie Orsoni, coach, auteur, experte en nutrition et fitness](https://www.valerieorsoni.com/fr/wp-content/uploads/2021/03/iStock-1216992005.jpg)
Fit woman working on abdominal muscles doing plank exercise, core workout at home. - Valerie Orsoni, coach, auteur, experte en nutrition et fitness
![Pleine Planche Et Elbow Plank Girl Workout Exercices Concept Vecteurs libres de droits et plus d'images vectorielles de Posture de la planche - iStock Pleine Planche Et Elbow Plank Girl Workout Exercices Concept Vecteurs libres de droits et plus d'images vectorielles de Posture de la planche - iStock](https://media.istockphoto.com/id/1219033459/fr/vectoriel/pleine-planche-et-elbow-plank-girl-workout-exercices-concept.jpg?s=170667a&w=0&k=20&c=aYuuthv8qVXICwfEwFUeG797DPxVp8tXYBhFrhMIh_Y=)