Begin with a dynamic warm-up, including exercises such as high knees, butt kicks, and leg swings. During the 800m run, maintain a steady pace and focus on breathing. For box jumps, ensure proper form and land softly on the box. If 24/20 in is too high, reduce the height to maintain safety. In kettlebell swings, use a weight that allows for good form and a full range of motion. If 53/35 lbs is too heavy, reduce the weight to maintain proper technique and safety. For double-unders, aim for a consistent rhythm and avoid excessive arm movement. If double-unders are too challenging, modify with single-unders or jumping jacks to maintain the workout's stimulus. Finish with a cooldown involving stretching, particularly focusing on the legs, hips, and shoulders.