Alternating Cross-Arm Leg Lift

1. Starting Position:
- Stand with your feet hip-width apart.
- Keep your arms crossed over your chest, with your elbows bent and hands resting on your shoulders.

2. Movement:
- Begin by lifting your right knee towards your chest while simultaneously keeping your left foot grounded.
- As you lift your knee, twist your upper body slightly to the right.
- Lower your right knee back down to the starting position.
- Repeat the movement with your left knee, lifting it towards your chest and twisting your upper body to the left.

3. Repetitions:
- Aim for 10-15 repetitions on each leg, alternating back and forth.

4. Form Tips:
- Keep your core engaged throughout the exercise.
- Maintain an upright posture, avoiding leaning forward or backward.
- Move in a controlled manner to maintain balance.

5. Breathing:
- Inhale as you lift your knee and twist your body.
- Exhale when you return to the starting position.

6. Progressions:
- To make the exercise more challenging, incorporate a small hop as you lift your knee, adding a plyometric element to the movement.