20-Minute HIIT Workout at Home – Burn Fat, Get Stronger & Torch Calories Fast

Looking for a quick workout that burns fat, increases your heart rate, builds strength and sculpts your body? Try this 20 minute HIIT workout for big results! It’ll help you burn more calories, boost your metabolism, increase your endurance, and tone your whole body — all without spending hours at the gym. You can even do it at home with no equipment.

It’s quick and effective. This 20 minute HIIT workout will give you a tough workout, burn fat and build strength. No equipment necessary. You’ll sweat. You’ll burn. You’ll feel amazing afterwards!

20 Minute HIIT Workout Torch Calories Fast at Home

1. Running with Knee Raise (High Knees)

Muscles targeted: The cardio system, hip flexors, lower abs, quads and core all need to be worked on.

How to do it step by step:

1. Stand tall, core braced, shoulders relaxed.
2. Run on the spot at a fast pace — drive knees up toward chest as high as possible (aim for hip height or higher).
3. Stretch arms up toward ceiling and down again in sync with knee lifts (opposite arm to knee).
4. Try to keep shoulders as low as possible (no shrugging).
5. Tighten stomach and focus on maintaining an upright posture.
6. Land softly on balls of feet — maintain fast rhythm.

7. Reps/time: 40 times total (20 with each leg) or 40–60 seconds continuous

Why it works: High knees are a classic HIIT workout staple. They quickly increase your heart rate, burn calories, engage your lower abs and hip flexors, improve your coordination and activate your legs. They are excellent for fat loss and core activation.

2. Ski Jump

Muscles targeted: Quadriceps, gluteal muscles, hamstrings, calf muscles, core muscles, outer thigh muscles, inner thigh muscles

How to do it step by step:

1. Stand with feet hip-distance apart, core engaged.
2. Set your body in motion by jumping to the right with your right leg leading, simultaneously lifting the opposite (left) leg so the knee bends.
3. Land softly on right leg, immediately jump to left side (left leg leads, right knee lifts).
4. Let arms swing back and forth naturally for momentum.
5. Keep back straight and head up — land softly.

6. Reps/sets: 3 sets of 15 repetitions on each side (30 total per set)

Why it works: Lateral jumps build explosive power, target the outer and inner thighs and glutes, improve agility and increase the heart rate for burning fat. The side-to-side motion strengthens stabilising muscles and enhances athleticism, which is great for toning your legs and burning calories.

3. Plank with Knee Raise

Muscles targeted: The full core is worked on first, along with the abs, obliques and transverse abdominis. Once that is done, the shoulders and hip flexors.

How to do it step by step:

1. Start in a normal plank position with elbows on the floor (elbows under shoulders), body in a straight line from head to heels.
2. Keep back straight — no sagging in lower back.
3. Let head be a straight extension of spine (gaze slightly forward).
4. Exhale → drive left knee toward left elbow (or as close as possible) while keeping hips level.
5. Inhale → return leg to plank.
6. Alternate — right knee to right elbow.
7. Move as fast as you can while keeping body straight.

8. Reps/sets: 3 sets of 15 repetitions per leg (30 total per set)

Why it works: This move combines isometric plank stability with dynamic knee drives. It engages the entire core to stabilise the hips, fire the hip flexors and lower abs, and improve endurance. It is excellent for tightening the midsection and building functional strength.

4. Squat with Jumps

Muscles targeted: Quadriceps, gluteal muscles, hamstrings, calves, core muscles, cardiovascular training.

How to do it step by step:

1. Stand with feet hip-wide apart, core engaged.
2. Inhale → squat down — push hips back, bend knees until thighs are near parallel (like sitting in a chair).
3. Pull pelvis in and suck navel toward spine.
4. Put weight on entire foot — keep balance back so you don’t strain knees.
5. Exhale → jump up in an explosive motion — lift off the floor with body stretched out, arms tilted back.
6. Land softly and immediately lower into next squat.

7. Reps/sets: 3 sets of 20 repetitions

Why it works: Jump squats are a great way to get stronger and build muscle in the lower body. They also make your heart beat faster, which helps burn fat. The squat phase targets the glutes and quadriceps; the jump adds plyometric power, which is excellent for toning the legs and boosting the metabolism.

5. Mountain Climbers

Muscles targeted: Full core, shoulders, hip flexors, quads, cardio

How to do it step by step:

1. Start in high plank: hands under shoulders, body straight, core/glutes tight.
2. Exhale → drive right knee toward chest quickly (foot hovers or taps floor).
3. Immediately switch — left knee to chest, right leg extends back.
4. Alternate fast like running in place — keep hips low and stable.
5. Suck in navel and squeeze shoulder blades together at the back.
6. Maintain a fast pace throughout.

7. Reps/sets: 3 sets of 20 repetitions per leg (40 total per set)

Why it works: Mountain climbers are a fat-burning, full-body exercise that engages the entire core, stabilising the hips while driving the knees up quickly. They improve endurance and shoulder stability while burning calories quickly, making them one of the best HIIT moves for abs and overall conditioning.

6. Russian Twist

Muscles targeted: Obliques, rectus abdominis, transverse abdominis, hip flexors

How to do it step by step:

1. Sit on floor, knees bent, feet flat (or lifted for more challenge).
2. Lean back slightly to engage abs (keep spine long).
3. Clasp hands together (or hold weight).
4. Exhale → twist torso to the right (fists move right).
5. Inhale → return to center.
6. Exhale → twist left.
7. Continue alternating.
8. Tighten pelvic floor and draw navel in throughout.

9. Reps/sets: 3 sets of 15 repetitions per side (30 total per set)

Why it works: The waistline is improved and rotational power is enhanced by rotational movement, which strengthens the obliques and the deep core. The seated position isolates the core, building endurance and stability — ideal for defining the side abs and improving functional strength.

7. Lunge

Muscles targeted: Quads, glutes, hamstrings, core, balance muscles

How to do it step by step:

1. Stand tall, feet together, core engaged.
2. Exhale → take a long step forward with one leg.
3. Lower body until both knees bend ≈90° (front knee over ankle, back knee hovers above floor).
4. Keep torso upright.
5. Inhale → push through front heel to return to standing.
6. Repeat on same leg or alternate.

7. Reps/sets: 3 sets of 15 repetitions per leg

Why it works: The classic lunge builds strength in one leg at a time, tones the entire lower body, improves balance and activates the glutes to create a lifted appearance. This functional exercise mimics everyday stepping and is great for improving leg shape, stability and calorie burn.

So, what we’re saying is, clear some space, and try this 20 minute HIIT workout, because you’re gonna get some great results! You’ll be amazed at what you can achieve in just 20 minutes!

Last Updated: April 2026 – Completely Rewritten

This article is for informational purposes only and is not a substitute for professional medical. Always see a qualified healthcare provider for concerns about your health.