TikTok Is Obsessing Over Cable Crunches. Here’s How to Do The Abs-Building Move Correctly, According to a Trainer.

Reported by Women's Health Magazine.

Cable crunches are having a moment — and honestly, the hype isn't entirely misplaced. The move, which involves kneeling at a cable machine and crunching down toward your hips using a rope attachment on the highest pulley, directly targets the rectus abdominis, the muscle responsible for that coveted six-pack definition. According to Women's Health Magazine, trainer Patricia Greaves, CPT — a Long Island-based personal trainer and member of the WH Strength in Diversity initiative — confirms that if visible ab definition is your goal, weighted cable crunches are genuinely effective. So yes, TikTok found something real this time.

Execution matters more than most people realize. Greaves recommends starting with 5 to 10 pounds, enough resistance that 10 to 15 reps across three sets feel legitimately hard. Kneel facing away from the machine, hold the rope at your temples, chest lifted — then crunch deliberately into a C-curve, pause at the bottom for a beat or two, and release with control. The whole point is that your abs are doing the work, not gravity, not momentum, not your neck.

What's Actually Going Wrong on Your Reps

The mistakes Greaves flags are predictable but worth naming. Rushing through reps is the biggest one — "tempo is everything," she says, and blowing past the movement with momentum means your abs are essentially spectators. The second issue is failing to brace the core before initiating the crunch, which shifts effort into the arms or neck instead. Third: if your hips are drifting around, the weight is too heavy. Lock those hips, drop the load, and do it right.

Here's the part the TikTok crowd tends to skip: cable crunches are a hypertrophy tool, not a complete core program. They isolate the front of your midsection and don't meaningfully touch your obliques, lower back, or pelvis — the full 360-degree system that actually keeps you upright and injury-free. Strong abs with a weak lower back is a liability, not an achievement. Greaves points to planks, side planks, bird dogs, and bicycle crunches as essential complements — the kind of work that supports heavy lifts and protects your spine long-term.

Cable crunches earn a place in your rotation, but they're a supplement, not a strategy — build the whole core and the aesthetics will follow.

Read the original at Women's Health Magazine.