Three Core Stability Tests That Beat Crunches Every Time

Crunches have dominated gym culture for decades, from early morning boot camps in Brisbane parks to late-night sessions in suburban Melbourne garages. Yet anyone who has spent time working with a knowledgeable trainer quickly learns that crunches only measure one slice of what your core actually does. Real core stability is about how well your trunk resists unwanted motion while your arms and legs move through space. That distinction matters whether you are training for the surf at Bondi, working through preseason drills at your local AFL club, or simply trying to pick up your kids without tweaking your back.

The good news is you do not need a gym membership or fancy equipment to find out where your core really stands. The following three tests challenge the deep stabilisers that crunches ignore, and they can be performed on a yoga mat in your loungeroom or on the grass at your local oval. They are also the same assessments Mitch uses with athletes before clearing them for heavier strength work.

What makes these checks more honest than a crunch test is that they require coordination, breath control, and timing, not just brute force of the rectus abdominis. You will quickly see how well your ribs sit over your pelvis, whether your hips stay level when you move one limb, and how cleanly your trunk transfers force from the ground up.

Why Crunches Fall Short of True Core Stability

A crunch is a sagittal-plane flexion exercise, plain and simple. It loads the front of the abdomen in a shortened position and tells you very little about how that muscle group behaves under rotation, anti-rotation, or anti-extension stress. Most athletic and everyday movements require the core to resist motion rather than produce it. Throwing a cricket ball on a Saturday arvo, swinging a golf club, or reversing the ute out of the driveway all demand stiffness through the trunk, not a flexion crunch.

Another issue with the crunch is that it tends to reinforce poor patterns. Many people perform hundreds of reps while their lower back stays arched and their neck strains forward, which trains the wrong muscles to dominate the movement. Over time this can lead to hip flexor tightness, rib flare, and the kind of nagging lower back discomfort that sends weekend warriors to the physio. A better assessment needs to challenge the core the way life actually uses it.

The Dead Bug Hold

Lie on your back with your arms reaching toward the ceiling and your hips and knees stacked at ninety degrees, shins parallel to the floor. The goal is not to move but to hold this position while keeping every part of your back pressed into the ground. A neutral ribcage is the target. If your lower back starts arching or your ribs pop up toward the ceiling, the deep core is not doing its job and the test is telling you something useful.

Hold the position for thirty seconds and breathe normally through it. If you can maintain that neutral spine while tapping one heel down to the floor and back without the lower back shifting, you have passed a solid baseline. Most blokes at the local footy club who pride themselves on big bench press numbers fail this on their first attempt, which is why it remains such a valuable litmus test before progressing to overhead work like the how-to-progress-from-wall-slides-to-overhead-squats-95865 sequence.

The Bird Dog Hold

Start on all fours with your hands under your shoulders and knees under your hips. Extend one arm forward and the opposite leg back, keeping both long and roughly parallel to the ground. The challenge is keeping your hips level and your spine neutral throughout the hold. Rotation through the pelvis or a sagging lower back means the glutes and deep stabilisers are not pulling their weight.

Hold for twenty to thirty seconds per side and pay attention to whether you start wobbling or holding your breath. Breath holding is a classic compensation and a sign the nervous system is bracing too aggressively rather than co-ordinating properly. Once you can hold the position steady without shaking, try lifting the hand and foot off the floor by only a few centimetres and add tiny pulses. That subtle change creates a far more demanding stability challenge without adding load to the spine.

The Side Plank Reach

Standard side planks often turn into a shoulder and hip flexor party rather than a true core test. The reach variation fixes that. Lie on your side with your elbow under your shoulder, stack your feet, and lift your hips off the ground. From there, reach the top arm straight up toward the ceiling, then thread it under your torso as if reaching for the far wall. Return to the start and repeat.

The movement forces the obliques, quadratus lumborum, and shoulder girdle to work together to control rotation and lateral flexion. It also reveals asymmetries between left and right that a regular plank will mask entirely. Trainers across Australia, from cricket academies in Adelaide to surf coaches on the Gold Coast, lean on this drill because it replicates the rotational demands of throwing, paddling, and swinging. If your hips drop during the reach, or you cannot breathe without shaking, that side needs more focused work.

Reading Your Results and Knowing What Comes Next

A passing score on all three tests does not mean your work is done. It simply means you have the foundational control to progress to more dynamic strength work safely. A failing score is not a reason to panic. It is a roadmap telling you which pattern to prioritise over the next four to six weeks. Pair your weakest test with two short sessions per week of focused drill work, then re-test at the end of the block.

One common trap is rushing straight from a weak test result into heavy loaded movements like deadlifts or overhead presses. That is the quickest path to a sore lower back and a long stint on the sidelines. Build the base first, earn the right to progress, and your training longevity will thank you. Many of the aches blamed on age are really unresolved stability deficits catching up.

Fitting These Tests Into a Busy Aussie Week

You do not need an hour for this. Five minutes before brekkie or as part of your warm-up before a gym session is plenty. Run through the dead bug hold for thirty seconds per side, the bird dog for thirty seconds per side, and the side plank reach for ten controlled reps per side. That is the entire assessment done before you have finished your coffee.

The trick is consistency, not volume. Jot down which test felt hardest and revisit it midweek. Once a week, run the full battery and track your scores in a note on your phone. Within a couple of months you will have a clear picture of how your core is responding to your training and you will be moving, lifting, and playing with far more confidence.

Grab Mitch's guide on progressing from wall slides to overhead squats, then book a movement assessment to see exactly where your foundation stands. Honest testing is where stronger, pain-free training begins, and there is no better time to start than right now.