The Arnold split is not for everyone, it may be effective in helping you build muscle groups and look better if you are dedicated to it. Early to Rise, Early to Conquer: Arnold's day begins with the sun, as he firmly believes in the adage "early to bed, early to rise." Rising at 5:00 AM, he kickstarts his morning routine with a brisk walk or light jog, allowing him to connect with nature and gather his thoughts before the world awakens.