15-Minute Shredded Ab Workout? An Effective HIIT for Six-Pack, Lower Abs, and Hips

Q: What is a HIIT?

HIIT stands for High-Intensity Interval Training. As the name suggests, it combines short bursts of intense exercise with brief rest periods. During the work interval, you exercise at a high intensity and give it your all, followed by a rest period or a lighter active movement. This cycle is repeated until you complete the entire set. Interval duration: Typically, 10–60 seconds of exercise, with rest periods lasting 10–60 seconds.

Table of Contents

Do you want to work on your abs but have limited time for a workout? If so, HIIT for abs is the perfect choice for you. You can complete it in just 15 minutes, targeting your rectus abdominis, obliques, and lower abdominal muscles, as well as your core. Plus, the high intensity will help you burn a lot of calories in a short amount of time, supporting your weight loss goals. You can do this ab workout at home without any equipment, so you can jump right in!

What is a HIIT?

HIIT stands for High-Intensity Interval Training. As the name suggests, it combines short bursts of intense exercise with brief rest periods.

During the work interval, you exercise at a high intensity and give it your all, followed by a rest period or a lighter active movement. This cycle is repeated until you complete the entire set.

Interval duration: Typically, 10–60 seconds of exercise, with rest periods lasting 10–60 seconds.
Progression: Beginners have shorter exercise intervals and longer rest periods. The goal is to gradually increase the duration of exercise and shorten the rest periods for greater effectiveness.
Variability: Experienced athletes can perform a less intense variation of the exercise instead of resting.
Number of sets: Typically 2–5, depending on fitness level and preferred workout duration.

How to measure intervals during HIIT?

You can use a mobile app or a workout timer equipped with a HIIT mode to track your exercise and rest intervals, allowing you to set any intervals you like.

You can learn more about HIIT in the article: Classic Cardio or Hiit Workout – Which One Burns Fat Better?
Tabata also ranks among HIIT, learn more about it in the article: Tabata: An Effective Full-Body Workout You Can Do in Just 12 Minutes

What Are the Benefits of HIIT for Abs?

HIIT is an effective and time-efficient type of training that adds variety to your workout routine. However, it offers many more benefits. ^[1–3]

1. You’ll save time.

A HIIT ab workout is really intense and effective, so just 10–15 minutes is enough to really engage your muscles. This makes it an ideal choice for all those who don’t have time for long workouts but still wants to see visible results.

2. You can customize your workout.

You can choose ab exercises based on your goals, whether you want to strengthen your core, focus on your obliques, or target your lower abs. Plus, you can set the intensity yourself. Beginners can incorporate shorter exercise intervals and longer rest periods, while advanced athletes can shorten the rest or skip it altogether, adding a lower-intensity exercise instead. For example, they might transition from a plank with arm raises directly to a plank on their knees.

3. You don’t need any equipment.

HIIT ab workouts can be performed using just your body weight, meaning you can do them at home or even while travelling. All you need is a mat or a towel to place underneath yourself, and you’re good to go. However, if you are at the gym or have access to exercise equipment at home, such as ankle weights, a balance half-ball, or a kettlebell, you can incorporate them to further enhance the effectiveness of your workout.

You can draw further inspiration for bodyweight workouts from the article: Get In Shape With These 12 Bodyweight Exercises

4. You’ll boost fat burning.

HIIT is an intense workout that allows you to burn a significant number of calories in a short amount of time. It gives your metabolism a boost, keeping it elevated for several hours after exercise. Following an intense session, the body requires more oxygen, and it takes longer to return to its resting state. This phenomenon is known as EPOC (Excess Post-Exercise Oxygen Consumption), which refers to the increased oxygen consumption after training. As a result, you will continue burning extra calories for hours after your workout—an advantage that is particularly beneficial for weight loss.

If you would like to learn more about which type of training helps burn the most calories and supports weight loss, you can find the details in the article: Diet, Cardio and Strength Training. What Is Best for Weight Loss?

5. You’ll work on your six-pack.

Well-defined abdominal muscles not only look great, but also enhance the overall functional strength of your body. However, to achieve them, it is essential to train consistently, at least twice a week. HIIT is an effective form of exercise that is well worth incorporating into your abdominal workouts. However, for the best results in building a toned and sculpted core, it is crucial to take a holistic approach—adjusting your diet and aligning your other training sessions with your goal.

You can learn more about how to adjust your diet and workouts and lose belly fat in the article: A Proven Guide to a Six-Pack: Diet and Training Routine for Sculpted Abs

HIIT for Abs: 2 Sample Workouts

You can customize your HIIT ab workout by selecting exercises that align with your personal goals and adjusting the length of workout intervals and rest periods. Below, you will find two sample workouts. The first focuses primarily on the rectus abdominis and lower abdominal muscles, while the second targets the oblique muscles and core stability. However, you can mix and match exercises based on your preferences and objectives. Whether your goal is a toned, defined, and lean stomach or a stronger core, these workouts have got you covered.

1. HIIT Workout for the Rectus Abdominis and Lower Abs

This workout is perfect for anyone looking to build a six-pack and target the lower abs. Before starting, make sure to warm up with light cardio exercises such as jumping jacks or jogging in place to activate your muscles. Once you’re warmed up, it’s time to dive into this HIIT ab routine!

Workout Structure: 30 seconds of exercise, 15 seconds of rest, repeated for 4 rounds
Rest Between Sets: 20 seconds
Number of Exercises: 5
Workout Duration: 15 minutes

1. Single Leg Stretch

Starting Position: Lie on your back on a mat. Raise your head, upper back, and extended legs a few centimetres off the ground. Engage your core and focus on keeping your lower back flat against the mat throughout the exercise.
Execution: Inhale as you draw one knee towards your chest using both of your hands. Exhale as you extend that leg back out and pull the other knee in. Continue alternating between legs until the end of the interval.
Common Mistakes: Limited range of motion, uncontrolled movement.
How to Make the Exercise More Challenging? Attach weights to your ankles or use a looped resistance band around your feet.

2. Roll Up

Starting Position: Lie on your back with your legs extended and your arms raised overhead.
Execution: Exhale as you smoothly raise yourself into a seated position, engaging your abdominal muscles while keeping your arms extended and your legs slightly bent. Then, inhale as you return to the starting position in a controlled manner and repeat the exercise.
Common Mistakes: Limited range of motion, uncontrolled movement.
How to Make the Exercise More Challenging? Hold a kettlebell, dumbbell, or weight plate with both hands as you perform the exercise, maintaining the same lifting technique.

3. Flutter Kicks

Starting Position: Lie on your back, raising your head, upper back, and extended legs a few centimetres off the ground. Let your arms rest freely on the floor alongside your body, using them for support.
Execution: Engage your abs and begin to swing your extended legs from side to side. Dynamically alternate the swings, moving your right leg over your left and then your left leg over your right. Remember to breathe throughout the exercise and focus on initiating the movement primarily from your core. Ensure that your lower back remains flat against the mat at all times.
Common Mistakes: Limited range of motion, insufficient engagement of the abdominal muscles, arching of the lower back.
How to Make the Exercise More Challenging? Keep your legs in a lower position (closer to the ground) or attach weights to your ankles.

4. Clapping Crunches

Starting Position: Sit on the mat and lean your torso back slightly, while keeping your back in its natural curve and your head aligned with your spine. Raise your slightly bent legs a few centimetres off the ground. Extend your arms and keep them alongside your body. Engage your core.
Execution: Exhale as you draw one knee towards your chest, and then clap your hands beneath it. Inhale as you return the leg to the starting position and then switch to the other leg. Continue alternating legs until the end of the interval.
Common Mistakes: Limited range of motion, uncontrolled movement.
How to Make the Exercise More Challenging? Keep your legs in a lower position (closer to the ground) or attach weights to your ankles.

5. Reverse Crunches With Leg Raise

Starting Position: Lie on your back with your arms alongside your body, or tuck them slightly under your hips for support. Bend your knees slightly and raise your legs a few centimetres off the ground. Engage your core.
Execution: Exhale as you draw your slightly bent legs towards your body and lift your pelvis and lower back a few centimetres off the ground. Inhale as you return to the starting position and repeat the exercise. Focus on ensuring that the movement is initiated primarily from your abdominal muscles.
Common Mistakes: Limited range of motion, insufficient engagement of the abdominal muscles, uncontrolled movement.
How to Make the Exercise More Challenging? Place a small dumbbell between your ankles, or attach weights to your ankles.

2. HIIT Workout for Oblique Muscles and the Core

This workout is perfect for anyone looking to strengthen their core and focus on the oblique muscles (sides). These muscles act as a natural corset, helping to tighten and stabilize the abdominal area. Before you start exercising, warm up lightly with activities such as jumping jacks or jogging in place to activate your muscles.

Workout Structure: 40 seconds of exercise, 20 seconds of rest, repeated for 3 rounds
Rest Between Sets: 15 seconds
Number of Exercises: 5 (For exercise number 4, perform it on one side first, and then switch to the other side in the next working interval)
Workout Duration: 15 minutes

1. Plank Up-Downs

Starting Position: Kneel on the ground and transition into a basic plank position. Ensure that you do not arch your back, especially in the lumbar region.
Execution: Exhale as you transition into a plank position on your extended arms, then immediately inhale as you return to the starting position. Continue this movement until the end of the interval.
Common Mistakes: Arching the back, uncontrolled movement.
How to Make the Exercise More Challenging? Use a weighted vest or ask a partner to place a weight plate on your back.

2. Single Leg Heel Taps

Starting Position: Lie on your back with your arms alongside your body. Raise your legs and bend them at a 90-degree angle. Engage your abdominal muscles.
Execution: Exhale as you touch the floor with the heel of one foot, then inhale as you return it to the starting position. Repeat the same with the other foot. Ensure that your back remains flat against the mat throughout the exercise. Focus on initiating the movement primarily from your abdominal muscles.
Common Mistakes: Limited range of motion, insufficient engagement of the abdominal muscles, arching the lower back.
How to Make the Exercise More Challenging? Increase the difficulty by slightly straightening your legs, attaching weights to your ankles, or placing a resistance band above your knees.

How to perform the single leg heel taps?

3. Bicycle Crunch

Starting Position: Lie on your back and raise your extended legs a few centimetres off the ground. Lightly touch your head with your fingertips, keeping your elbows open. Ensure that your lower back remains flat against the mat throughout the exercise.
Execution: Engage your abs and, while exhaling, bring your left knee towards your right elbow, then immediately bring your right knee towards your left elbow. Continue alternating dynamically between pulling your knees in and extending your legs. Focus on maintaining a steady breath throughout the exercise, and ensure that your lower back does not lift off the mat.
Common Mistakes: Excessively pushing your hands into your head, limited range of motion, insufficient engagement of the abdominal muscles, arching the lower back.
How to Make the Exercise More Challenging? Increase the difficulty by attaching weights to your ankles or placing a looped resistance band around your feet.

4. Single Leg Toe Touches

Starting Position: Lie on your back on the mat. Extend one arm overhead and keep the opposite leg straight. Place the palm of your other hand on your head, and bend the knee of your other leg. Ensure that your lower back remains flat against the mat throughout the exercise.
Execution: Exhale as you lift the extended arm and leg, aiming to touch the toes of your extended leg with the fingers of your opposite hand. Then, inhale as you return to the starting position and continue with another repetition. Complete the entire interval before switching sides for the next exercise segment.
Common Mistakes: Limited range of motion, uncontrolled movement.
How to Make the Exercise More Challenging? Hold a kettlebell or a dumbbell in the working hand.

How to perform the single leg toe touches?

Where to Go From Here?

If you’re looking for more bodyweight exercises suitable for HIIT, you can find them in our article: 21 Best Bodyweight Ab Exercises
You can also spice up your ab workouts with circuit training; inspiration awaits you in the article: Ab Circuit: The Journey to a Six-Pack and Strong Core
If you want to focus on your lower abs, you can find the most effective exercises in the article: Lower Abs: 13 Best Bodyweight Exercises
You can also work your abs using an exercise ball, as detailed in the article: 13 Best Exercise Ball Exercises for Strong Abs
You can also create a comprehensive core workout using a medicine ball. You can find the exercises in the article: Top 10 Ab Exercises With a Medicine Ball
If you have a resistance band at hand, you can follow the exercises in the article: Top 10 Ab Exercises With a Resistance Band
In case you only have a few minutes for an abdominal workout, try the exercises from the article: Effective 6-Minute Abs Workout at Home
Are you interested in how to lose belly fat? Practical tips can be found in the article: Lose Belly Fat and Get Into Shape With Our Simple Guide
There are no magic pills for losing belly fat, and doing crunches won’t help much either. To understand what really happens to your body when you do crunches regularly, read the article: Stomach Crunches and Sit UPS: Why They Do Not Help You Lose Stomach Fat?
Do you want to find out what percentage of body fat you need to lose to see visible abs? In that case, make sure to check out the article: What Percentage of Body Fat Do You Need to Have to See Abs?

What Are the Main Takeaways?

HIIT is an excellent choice for anyone looking to effectively work their abdominal muscles without the need for equipment. Additionally, you can complete the workout in just 15 minutes, which is particularly beneficial on hectic days when there’s no time for longer sessions. Due to its high intensity, you will burn a lot of calories and kickstart your metabolism. You can also customize HIIT to your performance level. Adjust the duration of the work intervals and rest periods, and if you’re a more advanced athlete, try incorporating some of the more challenging variations with weights. HIIT is a great way to spice up any training plan.

Did you find this article helpful? If so, make sure to share it with your friends and inspire them with HIIT ab exercises.

Exercise mats

Fat Burners

Sources:

[1] Atakan, M. M., Li, Y., Koşar, Ş. N., Turnagöl, H. H., & Yan, X.. Evidence-Based Effects of High-Intensity Interval Training on Exercise Capacity and Health: A Review with Historical Perspective. – https://doi.org/10.3390/ijerph18137201

[2] A Beginner’s Guide to HIIT. The Body Coach. – https://www.thebodycoach.com/blog/a-beginners-guide-to-hiit

[3] Soeria Santoso, D. I., & Boenyamin, H. A. The benefits and physiological changes of high intensity interval training.– https://doi.org/10.18051/UnivMed.2019.v38.209-216