Plus, you get two workouts with bicycle crunches — a cardio HIIT and an ab burn. The lower body/upper body action means you’re hitting the entire abdominal wall. Bicycle crunches have been shown to fire the abs to a great degree .
Plus, you get two workouts with bicycle crunches — a cardio HIIT and an ab burn. The lower body/upper body action means you’re hitting the entire abdominal wall. Bicycle crunches have been shown to fire the abs to a great degree .