Gravity boots turn basic sit-ups and squats into a serious inverted challenge. This video shows how inverted sit-ups and inverted squats can hammer the core, hip flexors, and lower body in a very different way.
Gravity boots turn basic sit-ups and squats into a serious inverted challenge. This video shows how inverted sit-ups and inverted squats can hammer the core, hip flexors, and lower body in a very different way.