The LOWER category focuses on the muscles of the hips & legs or the lower body. There’s a healthy mix of hip & knee-dominant exercises. Hip-dominant moves stress the glutes & hamstrings more. Knee-dominant drills target the quads & calves more. Try to do an equal amount of exercises in each category for training balance. If there’s a weakness in a given category, double or triple up on those drills. Most people could benefit from more hip-dominant exercises.