Add a video, GIF or photo link to show how this exercise is performed.
Start from a light, controlled stance with good posture.
1. Start in a plank position, core braced.
2. Drive one knee toward your chest, then switch quickly.
3. Keep the hips level throughout.
Keep breathing rhythmic; do not hold your breath during intervals.
Going all-out too early and losing form as fatigue sets in.
Scale the pace to keep movements controlled; stop if you feel dizzy or joint pain.
Beginner: Slow, controlled pace.
Intermediate: As described.
Advanced: Increase pace or add a plank jack in between.