A Hyperextension During a Routine Workout

A Hyperextension During a Routine Workout. Part of the series: Exercise Applications. When you're doing a hyperextension exercise for your lower back during a regular routine, it's so important to really engage your core muscles. Find out about a hyperextension during a routine workout with help from the first American physician/Orthopedic surgeon to write and demonstrate all exercises in a comprehensive fitness book in this free video clip.