Most core training is wasted. Endless crunches, sit-ups, and bicycle abs produce sore necks and tired hip flexors but limited transfer to actual lifting or visible abs. The core's primary function is not to flex the spine. It is to resist movement, transfer force between the upper and lower body, and brace under load. Train it for those functions, and you build a core that holds posture, supports heavy lifts, and produces the visible abs everyone associates with core training in the first place.
The Three Categories of Core Work
The midline has three primary stabilising functions:
- Anti-extension: Resisting the lower back from arching backward. The most important function for lifters, because heavy overhead pressing, squatting, and deadlifting all challenge anti-extension capacity.
- Anti-rotation: Resisting the torso from twisting under uneven loads. Critical for unilateral work, single-arm rows, and any sport-related rotation.
- Anti-flexion: Resisting the spine from rounding forward. The function of the lower back during heavy hinge work like deadlifts.
A complete core programme trains all three. Most casual core programmes train spinal flexion (sit-ups), which is the function the midline is least often asked to perform under load.
Anti-Extension Exercises
1. Plank
The classic. Often dismissed as a beginner exercise, the plank is genuinely one of the highest-return anti-extension exercises when run hard. Most lifters cannot hold a strict plank for two minutes, which is the standard for solid core endurance.
How to do it: Forearms and toes on the floor, body in a straight line, glutes squeezed hard, ribs pulled down towards hips. Breathe normally. Stop the moment form breaks (hips dropping or rising).
Programme as: 3 sets of 30 to 90 seconds. Progress by adding time, then move to weighted plank or RKC plank (more intense isometric).
2. Hanging Leg Raise
The progression beyond the plank for anti-extension. The hanging leg raise demands the entire core to keep the hips from extending while the legs come up. Hanging knee raises, then hanging leg raises, then toes-to-bar build the strength and skill in sequence.
How to do it: Hang from a pull-up bar. Brace core hard, lift legs straight up to roughly parallel with the floor (hanging leg raise) or all the way to the bar (toes-to-bar). Lower under control. Avoid swinging.
Programme as: 3 sets of 6 to 12 reps.
3. Ab Wheel Rollout
One of the most demanding anti-extension exercises. The ab wheel rollout takes the core through a full extension under load, which builds enormous strength in the brace position. Done from the knees first, then progressed to standing for advanced lifters.
How to do it: Kneel on the floor, hands gripping the ab wheel. Roll the wheel forward, extending the body in a straight line, then pull back to the start position. Keep the lower back from sagging at any point.
Programme as: 3 sets of 6 to 12 reps.
Anti-Rotation Exercises
4. Pallof Press
The single best anti-rotation exercise. The Pallof press loads the core with a sideways pull and asks it to resist rotating, which is exactly the function the obliques are built for.
How to do it: Stand sideways to a cable at chest height. Grip the handle in both hands, holding it against your sternum. Press the handle straight out in front of you. Hold for a beat. Pull back. The cable will try to rotate you towards itself; resist.
Programme as: 3 sets of 10 to 12 reps per side.
5. Suitcase Carry
Loaded carry with one heavy weight in one hand. The core has to resist the lateral lean that the asymmetric load produces. Builds anti-rotation and grip strength simultaneously, and produces the kind of trunk strength that transfers to everything else.
How to do it: Pick up a heavy dumbbell or kettlebell in one hand. Walk in a straight line for a defined distance, keeping the torso upright. Switch sides.
Programme as: 3 sets of 30 to 60 second walks per side.
Loaded Carries and General Core
6. Farmer Walk
Heavy loaded carry with a dumbbell or kettlebell in each hand. Trains grip, traps, core, glutes, and cardiovascular conditioning simultaneously. The single highest-return time-per-session exercise in the gym for general physical preparedness.
How to do it: Pick up two heavy weights. Walk for a defined distance with upright posture, shoulders back. Don't slow down.
Programme as: 3 sets of 30 to 60 seconds, or one set of 90 to 120 seconds with maximal load.
7. Cable Crunch
If you must do a flexion-based exercise, this is the one. The cable crunch loads the rectus abdominis (the visible six-pack muscle) under resistance, which produces more stimulus than bodyweight crunches.
How to do it: Kneel facing a high cable with a rope attachment. Hold the rope by your face or behind your neck. Crunch down by curling the torso, contracting the abs hard. Reverse under control.
Programme as: 3 sets of 12 to 15 reps.
8. Dead Bug
A simple, joint-friendly anti-extension exercise that trains coordination between the trunk and limbs. Particularly useful for lifters with lower back history because it loads the core with no spinal compression.
How to do it: Lie on your back, arms extended towards the ceiling, knees bent at 90 degrees with shins parallel to the floor. Lower one arm and the opposite leg towards the floor while keeping the lower back pressed flat. Reverse, alternate sides.
Programme as: 3 sets of 8 to 12 per side.
9. Side Plank
Anti-lateral-flexion. The side plank loads the obliques to resist the body collapsing sideways. A useful counterweight to standard plank work.
Programme as: 3 sets of 30 to 60 seconds per side.
How to Build Core Work Into a Programme
Core work does not need a dedicated day. The most efficient placement:
- End of every session: 5 to 10 minutes of core work. One anti-extension exercise, one other category. Rotate exercises across sessions.
- Light loaded carries on rest days: 5 to 10 minutes of farmer walks or suitcase carries adds work without major recovery cost.
- Compound lifts already train the core: Heavy squats, deadlifts, overhead presses, and rows all train the bracing pattern. Direct core work supplements rather than replaces this.
A simple weekly core structure:
- Day 1 (after lifting): Plank, Pallof Press.
- Day 2 (after lifting): Hanging Leg Raise, Suitcase Carry.
- Day 3 (after lifting): Ab Wheel Rollout, Cable Crunch.
- Day 4 (after lifting): Farmer Walk, Side Plank.