1. Stand with your feet together and arms at your sides.
2. Begin by doing a traditional jumping jack: Jump and spread your feet out past shoulder-width apart while simultaneously raising your arms out and up over your head.
3. As you jump back to the starting position with your feet together, lift one knee high toward your chest.
4. Jump back out to the wide stance and lower your raised knee back to the starting position, while bringing your arms down to your sides again.
5. Perform the next jumping jack, but this time, when you bring your feet back together, raise your other knee toward your chest.
6. Continue alternating the high knees with each jumping jack movement.
7. Maintain a brisk pace to keep your heart rate up, and focus on engaging your core as you lift your knees high.
8. Be consistent with your breathing, and keep your movements fluid and controlled.
9. Aim to perform a set number of repetitions or for a specific duration of time.
Remember to warm up before starting this exercise and to cool down after the completion of your routine. Also, pay close attention to the form to avoid any potential strain or injury.
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