How to do a Burpee/squat thrust Only a few trainees can maintain neutral spine in this position, are you one of them??? The movement from the bottom of the squat to the pushup position and back to the bottom of the squat requires a large amount of hip flexion. Usually the lower back will have to flex! @muscleandmotion #burpees #squats #squatchallenge #squat #squatday #gym #exercise http://www.muscleandmotion.com/products/strength-training-app/ | Muscle & Motion