
jack burpee
Cardiovascular systemBody weight

Step 1: Stand with your feet shoulder-width apart.
Step 2: Bend your knees and lower your body down as if you were sitting back into a chair.
Step 3: Keep your chest up and your weight in your heels.
Step 4: Pause for a moment at the bottom, then push through your heels to return to the starting position.
Step 5: Repeat for the desired number of repetitions.