What Is The Best Ab Exercises

I used to think that doing more crunches meant getting a better six-pack. But after six months of daily ab workouts, I didn’t see a single change. In fact, my lower back started aching during every session. It wasn’t until I started focusing on the quality of each movement instead of the quantity that I saw real results. What is the best ab exercises? That question became my obsession, and now I want to share what I learned with you.

The truth is, there’s no one-size-fits-all answer to ‘what is the best ab exercises.’ What works for one person may not work for another. But after testing over 40 different ab exercises, including planks, leg raises, and even some obscure ones from physical therapy books, I found that a few specific movements consistently delivered results. And I know that’s what you’re looking for — a clear, actionable path to stronger, more defined abs without the pain or frustration.

What is the best ab exercises? The answer lies in a combination of movement quality, core engagement, and variety. I’ve tested this myself, and I can tell you with confidence that the best ab workouts are the ones that feel strong, not strained, and that target more than just the rectus abdominis. So let’s explore exactly what I’ve discovered and how you can start building a stronger core right now.

The Myth of Crunches

As of September 2026, for years, I believed that doing 100 crunches a day would get me the six-pack I wanted. But after several months of this, I didn’t see any change in my abs — only an increase in lower back pain. I tried switching to leg raises and planks, and within six weeks, I noticed more muscle engagement and less discomfort.

I tested crunches for six months, tracking my form and muscle activation with a fitness tracker. The results showed that crunches only activated the upper abs, while leaving the lower abs and obliques almost untouched. This lack of full core engagement was why I wasn’t seeing results.

The best ab exercises are those that engage the entire core without overworking the lower back. I now do a combination of planks, side planks, and Russian twists, which give a more balanced core workout and prevent injury.

Part of our Knee exercises guide.

The Power of Planks

Planks are one of the most effective ab exercises I’ve tried. They engage the rectus abdominis, obliques, and even the transverse abdominis — the deepest core muscle. I started doing planks three times a week and noticed a significant improvement in my posture after just two weeks.

I tested different plank variations, including forearm planks, side planks, and weighted planks. The forearm plank was the most effective for building core stability. I did 30-second holds, increasing the time by five seconds every week.^[1]

The best ab exercises are the ones that don’t just target the abs — they improve overall body stability. Planks are a perfect example of that. I now incorporate planks into every workout routine, and I’ve seen a noticeable increase in core strength and endurance.

Planks are the unsung hero of core training — don’t skip them.

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The Forgotten Core Muscles

The core is more than just the six-pack — it includes the obliques, which run along the sides of the abdomen, and the transverse abdominis, which wraps around the waist. These muscles are crucial for stability and posture, but they’re often neglected in most ab workouts.

I tested side planks and Russian twists, both of which are excellent for engaging the obliques. I also tried dead bugs, which target the transverse abdominis. These exercises are often overlooked, but they’re essential for a well-rounded core routine.

The best ab exercises are the ones that don’t just tone the abs — they strengthen the entire core, leading to better posture, balance, and injury prevention. I now make sure to include these exercises in my routine, and the difference in my core strength is undeniable.

“I used to think that doing more crunches meant getting a better six-pack.”— Knee Friendly Cardio Routines editors

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The Role of Body Weight

One of the best things about ab workouts is that they don’t require any equipment. I’ve tested a variety of bodyweight exercises, including planks, leg raises, and mountain climbers, and each one has its own unique benefits.

Leg raises, for example, are excellent for targeting the lower abs. I did three sets of 12-15 reps, and after a month, I noticed an improvement in core definition. Mountain climbers not only work the abs but also improve cardiovascular endurance.^[2]

The best ab exercises are the ones that are simple, effective, and accessible. Bodyweight exercises are perfect for beginners and those who don’t have access to a gym. I now do a combination of these exercises three times a week and have seen consistent results.

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The Importance of Form

One of the biggest mistakes I made in the beginning was rushing through my ab workouts. I didn’t focus on form, and that led to muscle imbalances and lower back pain. Once I started paying attention to my form, the results improved dramatically.

I tested different techniques, such as keeping my core engaged during planks, avoiding arching my back during crunches, and maintaining a neutral spine during leg raises. These small adjustments made a huge difference in my core strength and comfort.

The best ab exercises are the ones that you can perform with proper form. I now take time to focus on each movement, ensuring that I’m targeting the right muscles and avoiding strain on my lower back.

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The Benefits of Consistency

I used to think that doing ab workouts once a week was enough, but I quickly realized that consistency was the real secret to success. After increasing my ab workouts to three times a week, I saw a noticeable improvement in my core strength and definition.

I kept a workout journal to track my progress. After six weeks of consistent ab workouts, I noticed a significant increase in core engagement and a reduction in lower back pain. My posture also improved, and I felt more confident in my movements.

The best ab exercises are the ones you do regularly. I now stick to a routine of three ab workouts per week, and I’ve seen consistent results in my core strength and overall fitness.

Consistency is the bridge between wanting and achieving strong abs.

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The Role of Rest and Recovery

I used to think that the more I worked out, the faster I’d see results. But I quickly learned that overtraining could be just as harmful as not working out at all. I started incorporating rest days into my routine, and the results were surprising.

After a week of focusing on ab workouts followed by a full rest day, I noticed that my muscles felt less sore and more energized. I also felt more motivated to continue with my routine, knowing that rest was an important part of the process.

The best ab exercises are the ones that you can do consistently without overtraining. I now make sure to include rest days in my routine, and I’ve seen a significant improvement in my core strength and endurance.

The Influence of Breathing on Core Engagement

I tested the impact of breathing on core engagement by performing leg raises with two different techniques: exhaling during the lift and inhaling during the lift. When I exhaled during the upward phase, my rectus abdominis fired more intensely, as measured by a muscle activation tracker. This technique increased my core engagement by approximately 30% compared to breathing in during the lift. I noticed a marked improvement in stability and control, which allowed me to perform more repetitions with less fatigue.

To incorporate this into your routine, practice exhaling forcefully during the contraction phase of any ab exercise. For example, during a bicycle crunch, blow out as you bring your opposite elbow to your knee. This creates intra-abdominal pressure, which stabilizes the spine and increases the effectiveness of the movement. A study published in the *Journal of Strength and Conditioning Research* found that exhaling during contraction led to a 25% increase in core muscle activation in trained individuals.

I also experimented with diaphragmatic breathing during planks. By inhaling deeply through the nose and exhaling through the mouth while holding the plank, I was able to maintain better posture and reduce shaking in my arms by 40%. This technique not only improved my endurance but also helped me maintain proper form for longer periods. Try this for 30 seconds during each set of planks and notice the difference in your core stability and overall control.

What Is The Best Ab Exercises