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High Knees
HomeQuadriceps › High Knees

High Knees

Quadriceps Bodyweight Cardio Cardio
Difficulty: Beginner Equipment: Bodyweight Primary: Calisthenics-Cardio-Functional Secondary: Full Body

Overview

If you are building out quadriceps training, the High Knees is a beginner-level option that uses bodyweight. Mechanically, the target muscles contribute to the movement — the reason this exercise carries over to overall performance in this pattern. It sits in the cardio category, so the emphasis falls on movement quality and repeatable output. The 'High Knees' element in the name is the part that matters technically — it defines the exact position and path this version uses, and swapping it changes the training effect. Support comes from the full body; the full body in particular help contribute to the movement, which is why fatigue there often shows up before the quadriceps is fully worked. Training this with bodyweight needs no equipment at all and can be done virtually anywhere, though it is harder to load progressively once you outgrow it. In a training week, this fits naturally into any session where quadriceps is the priority. The pattern is accessible enough to learn in a single session, which makes it a sound entry point before progressing to heavier or more complex variations.

Muscles Worked

The High Knees is primarily a calisthenics-cardio-functional exercise, but it is never only the calisthenics-cardio-functional doing the work.

Calisthenics-Cardio-Functional
75%
Full Body
42%
  • Calisthenics-Cardio-Functional (primary) — These fibres contribute to the movement, and they carry the majority of the load in this movement.
  • Full Body (secondary) — Assists by helping to contribute to the movement, contributing to overall performance in this pattern.

Benefits of the High Knees

  • Uses bodyweight, which needs no equipment at all and can be done virtually anywhere.
  • Raises work capacity, so you recover faster between hard sets of everything else.
  • Builds strength in the quadriceps through a cardio pattern, which carries over directly to sustaining rhythmic effort over time.
  • Reinforces the the working muscles plus your cardiovascular system as a coordinated unit rather than as isolated parts.

How to Perform the High Knees

  1. 1
    Set your starting position and brace your core before the first rep.
  2. 2
    Begin at an easy pace and let your breathing settle into a rhythm.
  3. 3
    Build to your working intensity and hold it for the planned duration.
  4. 4
    A good High Knees rep looks identical to the one before it; when it doesn't, the set is done.
  5. 5
    Ease off gradually at the end rather than stopping abruptly.
  6. 6
    Reset your position between reps if it drifts, rather than working through a bad setup.
Your Goal General Fitness
Sets
2–3
Reps
10–15
Rest
60s

Breathing Technique

The general rule for the High Knees is simple: establish a steady breathing rhythm matched to your cadence. Keep the breath flowing continuously — there is no need to hold pressure in this pattern. Getting this right stabilises your trunk and keeps blood pressure in a sensible range.

Tips for Proper Form

  • Control the lowering phase — most of the quadriceps stimulus comes from resisting the weight, not lifting it.
  • Keep the range of motion consistent across every rep so you can compare sessions honestly.
  • Set your position before the first rep rather than correcting it mid-set.
  • Settle into a repeatable rhythm you can hold for the full interval.
  • Consistency beats intensity for conditioning. Three moderate sessions a week outperform one all-out effort.
  • Log your High Knees numbers each session. The quadriceps responds to gradual, tracked increases far more reliably than to hard sessions you can't repeat.
  • Because there's no external load to hide behind, form is the only variable. Regress the movement before you let it get sloppy.

Common Mistakes to Avoid

  • Starting far too hard and fading badly.
    Do this insteadSet a pace you could hold for the full duration, then build from there.
  • Letting the full body take over the High Knees.
    Do this insteadIf you feel it everywhere except the quadriceps, reset your position and ease off the difficulty.
  • Rushing reps because there's no weight to slow you down.
    Do this insteadUse a deliberate tempo; without external load, time under tension is your main lever on the quadriceps.

Variations by Experience Level

Beginner

Shorten the range of motion to the portion you can control, then extend it as confidence builds. Film one set of the High Knees from the side; it's the fastest way to spot what to fix.

Intermediate

Increase total working sets before increasing load — volume drives most of the adaptation at this stage. Hold your High Knees load for two sessions before increasing it.

Advanced

Slow the lowering phase to three or four seconds to accumulate tension without adding weight. At this level the High Knees is best programmed after your heaviest quadriceps work, not before it.

Safety Considerations

  • Stop the set when technique degrades — a High Knees rep that no longer looks like your first one is not building anything.
  • Warm up with lighter sets of the High Knees before your first working set.
  • The most common way the High Knees goes wrong is starting far too hard and losing form as fatigue accumulates.

Who Should Avoid This Exercise

The High Knees suits most healthy trainees, but it is not appropriate for everyone.

  • Anyone experiencing sharp, localised or radiating pain during the movement — that is a signal to stop, not to push through.
  • Anyone managing an Achilles or ankle injury, until pain-free walking is restored.
  • Anyone with an acute lower-back injury or disc irritation, until cleared to load the spine again.

This is general educational information, not medical advice. If you are managing an injury or medical condition, check with a qualified professional before adding this exercise to your programme.

Frequently Asked Questions

What muscles does the High Knees work?

It primarily trains the calisthenics-cardio-functional, with the full body assisting. The pattern is classified as cardio, so the the working muscles plus your cardiovascular system share the workload.

Is the High Knees suitable for beginners?

Yes. It is rated beginner-level, and the pattern can usually be learned in a single session with light resistance.

How many sets and reps should I do?

A practical starting point is 3 sets of 6-8, resting 2-3 min between sets, roughly 2x per week. Adjust from there based on how you recover.

What equipment do I need for the High Knees?

You need bodyweight. This needs no equipment at all and can be done virtually anywhere, though it is harder to load progressively once you outgrow it.

How do I breathe during the High Knees?

As a general rule, establish a steady breathing rhythm matched to your cadence. Avoid holding your breath for the entire set.

What is the most common mistake with the High Knees?

Starting far too hard and losing form as fatigue accumulates. The simplest correction is to settle into a repeatable rhythm you can hold for the full interval.

What can I do instead of the High Knees?

Good substitutes that train the same quadriceps pattern include Barbell Jefferson Squat, Barbell Squat To Grass, and Air Swing Running. Pick whichever matches the equipment you have available.

How often should I do the High Knees?

About 2x per week suits most people. Recovery, not frequency, is what limits progress.

About Training Your Quadriceps

The High Knees fits into that picture as a beginner option using bodyweight, leaning on the full body alongside the quadriceps.

The quadriceps are the four large muscles on the front of the thigh that straighten the knee and drive almost every lower-body movement. They are among the biggest and most powerful muscles in the body, so training them hard pays off in strength, size, and athletic performance.

Squat and lunge patterns are the foundation of quad development — back squats, front squats, leg presses, split squats, and step-ups all load the quads heavily while also recruiting the glutes. Leg extensions isolate the quads directly for extra volume and a strong contraction. For most lifters, anchoring leg day with a heavy compound squat and finishing with lunges and extensions builds the most complete thighs.

Keep the knees tracking over the toes, descend to at least parallel where mobility allows, and control the lowering phase. Beginners should master bodyweight and goblet squats before loading a heavy barbell.

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