
High knees are a cardio exercise where you run in place while bringing your knees up high.
Stand with your feet hip-width apart, arms bent by your sides.
Run in place, bringing each knee up to hip height quickly, using your arms to help.
Stay on the balls of your feet and keep your torso upright.
Image and text: Bryl Lim / Everkinetic — recoloré et rastérisé — CC BY-SA 4.0, via Workout Guide. Original entry