Quick Answer
High Knees is a beginner cardio exercise that targets your quadriceps, hip flexors and core. It uses only your bodyweight. Stand tall with feet hip-width apart.
Video Tutorial
How to Perform the High Knees
- 1
Stand tall with feet hip-width apart.
- 2
Drive one knee up toward your chest.
- 3
Quickly switch legs, bringing the other knee up.
- 4
Pump your arms in rhythm with your legs.
- 5
Stay on the balls of your feet throughout.
Common Mistakes to Avoid
- !Rushing reps instead of controlling the lowering (eccentric) phase — aim for 2–3 seconds down.
- !Letting form break down as reps add up. Stop the set when technique slips, not when you physically can't do another rep.
- !Letting knees cave inward (valgus) — track them in line with your second toe throughout the rep.
Tips for Better Form
- ✓Breathe out during the effort (concentric) and breathe in on the return (eccentric).
- ✓Use a mirror or film yourself on your first session — your perceived form and actual form often differ.
- ✓Keep ribs down and lats engaged — this keeps tension on the core, not the hip flexors.
- ✓Don't worry about load — master the movement pattern with light weight or easier variations first.
Alternative Exercises
If the High Knees isn't right for your body, equipment, or goal, try these similar exercises that hit the same muscle groups:
Frequently Asked Questions
What muscles does the High Knees work?
The High Knees primarily works your quadriceps, hip flexors and core. Secondary muscles include the calves and abdominals.
What equipment do I need for the High Knees?
The High Knees needs no equipment — just your bodyweight. You can perform it at home or at the gym as long as you have what's listed.
Is the High Knees suitable for beginners?
Yes. The High Knees is a beginner-level exercise. Start with lighter load or fewer reps and focus on form before adding intensity.
How many sets and reps of High Knees should I do?
For strength: 3–5 sets of 3–6 reps with longer rest (2–3 min). For hypertrophy (muscle growth): 3–4 sets of 8–12 reps with moderate rest (60–90 sec). For endurance: 2–3 sets of 15+ reps with short rest (30–45 sec). Adjust based on your program and goal.
Can I do the High Knees every day?
No. Muscles need 48 hours to recover between heavy training sessions. If you want to train quadriceps, hip flexors and core more frequently, alternate harder and easier variations and keep overall weekly volume moderate.