Why I swapped crunches for dead bugs
For years, crunches were my default core exercise. They were easy to remember, easy to add to a home workout and familiar from every old-school gym routine. A few sets on the living-room floor felt like sensible training, especially after a run or a footy session.
The problem was that I was chasing a tired stomach rather than a stable trunk. My neck often joined in, my lower back took over, and the movement did little to teach me how to keep my ribs, pelvis and spine controlled while my arms and legs moved. Dead bugs have been a quieter, more useful replacement.
Crunches trained movement, not control
Crunches repeatedly flex the spine. That is not automatically bad, and they can suit some people, but they were a poor match for what I wanted from core training. I wanted to brace while lifting, changing direction, carrying groceries and getting through a long day at a desk.
Dead bugs are closer to an anti-extension exercise. The aim is to stop the lower back arching as the opposite arm and leg move away from the body. The exercise looks simple, but the small details make it demanding: steady breathing, a controlled range and a pelvis that does not tip forward.
The dead bug feels simple for a reason
I start on my back with my hips and knees at roughly 90 degrees, arms pointing towards the ceiling. I gently exhale, bring my ribs down and flatten my lower back without smashing it into the floor. Then I lower one arm and the opposite leg, return them, and switch sides.
The movement should stay smooth and quiet. If my back lifts, my ribs flare or my hip flexors grab, I shorten the range. That makes it a useful regression as well as a core stability drill, which is handy when returning after time away from training or managing a niggly back.
Small changes made it more effective
The biggest improvement was slowing down. I stopped treating each repetition as something to get through and started treating it as a coordination exercise. A full breath out during the lowering phase gives me a better brace than holding my breath and rushing.
These are the cues I keep coming back to:
- Keep the pelvis heavy and steady
- Move the opposite arm and leg together
- Exhale as the limbs lower
- Stop before the lower back arches
A carpet in a Melbourne flat, a towel on a Sydney living-room floor or a mat beside the barbecue area can all work. No special equipment is needed, which suits the small-space reality of many Australian homes.
It fits around real training
I use dead bugs before strength work, after an easy run or as part of a short recovery session. Two or three sets of five to eight controlled repetitions per side are usually enough. They also work well before squats, deadlifts or kettlebell training because they wake up bracing without exhausting the abdominal muscles.
For weekend sport, the carryover is practical. A stable trunk helps when changing direction on an AFL oval, contesting a ball at touch footy or keeping position during a beach volleyball game. It will not magically prevent injury, but it gives the hips, shoulders and spine a clearer platform to work from.
Common mistakes are easy to spot
The most common mistake is trying to reach the floor with the hands and feet at all costs. Range is secondary to control. I would rather keep the heel higher or bend the knee than turn the exercise into a lower-back arching contest.
Another mistake is making every session harder too soon. Before adding ankle weights, a stability ball or a band, I make sure I can breathe normally and keep the same shape on both sides. A physiotherapist in Brisbane, Perth or Adelaide may prescribe different variations for a specific problem, so generic exercise advice should not replace an individual assessment.
A short session can look like this:
- Five slow repetitions per side
- Rest for 30 to 45 seconds
- Repeat for two or three rounds
- Finish with an easy walk or mobility work
Stability beats the burn
Crunches gave me a familiar abdominal burn, but dead bugs gave me better awareness of how my whole trunk works. That distinction matters when training for everyday movement rather than chasing soreness or a particular look.
They are also easy to keep consistent with Australia’s outdoor, weather-dependent routines. On a hot summer morning, a few controlled sets indoors are more realistic than forcing a long workout. At the other end of the market, there is no need for a reformer, cable machine or expensive home-gym package; a floor mat and a few minutes are enough.
The useful lesson is simple: core training does not have to be dramatic. Dead bugs reward breathing, patience and control, and that stable foundation is what I want to remember.