What is the single best core exercise?

The hanging leg raise. It trains the rectus abdominis through a full range of motion with body weight resistance, builds grip strength, and can be progressively overloaded by advancing from knee raises to straight leg raises to toes-to-bar. If you could only do one core exercise for the rest of your life, this would build the most complete midsection. However, the hanging leg raise does not train anti-rotation or anti-lateral flexion — so a complete core program should include a Pallof press or side plank alongside it.

How often should I train core?

Three to four times per week works best for most lifters. The core muscles recover faster than larger muscle groups like quads or back. Keep sessions short — three to four exercises for eight to twelve total sets per session at the end of your workout. Do not train core before heavy compound lifts (squats, deadlifts, overhead press) because a fatigued core reduces spinal stability under heavy loads. The best approach: add ten to fifteen minutes of core work at the end of three to four workouts per week.

Will core exercises give me a six-pack?

Core exercises build the muscles. But visible abs require low body fat — roughly ten to fifteen percent for men and eighteen to twenty-four percent for women. You cannot spot-reduce belly fat with core exercises. To reveal your abs: maintain a caloric deficit through diet, keep training to preserve muscle, and train core to build the muscles so they are visible once body fat is low enough. The best core exercises for visible abs are hanging leg raises, cable crunches, and ab wheel rollouts — they directly build the rectus abdominis.

Are planks still effective or are they overrated?

Planks are effective but often done wrong. Holding a plank for three to five minutes does not build strength — it builds endurance with diminishing returns after sixty seconds. If you can hold a plank for sixty seconds with perfect form, you should progress: add weight on your back, try an RKC plank (maximal tension for ten to fifteen seconds), or move to a harder anti-extension exercise like the ab wheel rollout or body saw. Planks are a foundation — not the ceiling.

Should I use ab machines at the gym?

Most ab machines (especially the seated crunch machine) force spinal flexion under load, which is suboptimal for core development and potentially harmful with repeated use. The cable crunch is the one exception — it allows loaded flexion while keeping the spine relatively neutral. Skip the ab machines and use cables, hanging bars, and bodyweight exercises instead. Your core was designed to stabilize the spine, not crunch it — train it accordingly.

Best Core Exercises Ranked (2026)

“Core” is more than abs. It includes the rectus abdominis (six-pack), obliques (sides), transverse abdominis (deep stabilizer), and erector spinae (lower back). Effective core training goes beyond crunches — it includes anti-extension movements (planks), anti-rotation movements (Pallof press), anti-lateral flexion (suitcase carries), and hip flexion (hanging leg raises).

This ranking prioritizes exercises that build a strong, functional core, not just visible abs. The core's primary job is to stabilize the spine during movement — the best exercises train this function. Each exercise links to its full guide. Browse all core movements in our complete core exercise library.

How We Ranked These Exercises

We evaluated core exercises on four criteria:

Muscle activation: Studies measuring rectus abdominis, obliques, transverse abdominis, and erector spinae recruitment.
Functional strength: Does the exercise train the core how it actually functions — as a stabilizer that resists unwanted movement? Anti-extension, anti-rotation, and anti-lateral flexion exercises rank high.
Practicality: Available in most gyms, reasonable injury risk, works for multiple experience levels.
Spine safety: Exercises that load the spine through repeated flexion (crunches, sit-ups) rank lower than exercises that build stability without compressive loading.

For our full training philosophy, see our methodology page.

The 12 Best Core Exercises

Hanging Leg Raise

The most demanding core exercise. Hanging leg raises train the rectus abdominis through a full range of motion with body weight resistance. They also build grip strength and hip flexor endurance. Start with knee raises, progress to straight leg raises, then advance to toes-to-bar. This exercise builds both ab strength and the functional hip flexion pattern.

Primary muscles: Rectus abdominis, hip flexors. Type: Hip flexion. Best for: Overall ab development, progressive bodyweight loading.

Full hanging leg raise guide

Ab Wheel Rollout

Anti-extension at its most intense. The ab wheel rollout trains the entire front core under extreme lengthening — one of the highest rectus abdominis activations in studies. As you roll out, your core must resist spinal extension against increasing leverage. Start from your knees; advance to standing rollouts. Inexpensive equipment with massive returns.

Primary muscles: Rectus abdominis, obliques, hip flexors. Type: Anti-extension. Best for: Maximum core activation, ab muscle growth, core strength.

Full ab wheel rollout guide

Pallof Press

The gold standard anti-rotation exercise. Named after physical therapist John Pallof, this exercise trains the core to resist rotational forces — exactly how the core functions in real life and sport. Stand perpendicular to a cable machine or band anchor, press out, and resist the rotation. Simple setup, profound results for core stability.

Primary muscles: Obliques, transverse abdominis. Type: Anti-rotation. Best for: Rotational stability, athletic performance, injury prevention.

Full Pallof press guide

Plank

The foundational anti-extension exercise. Planks build isometric core endurance and teach the basic bracing pattern that transfers to all other exercises. Master the plank before progressing to harder variations. If you can hold a perfect plank for 60 seconds, add weight or progress to the ab wheel — holding longer provides diminishing returns.

Primary muscles: Rectus abdominis, transverse abdominis. Type: Anti-extension (isometric). Best for: Foundation building, core endurance, beginners.

Full plank guide

Side Plank

Anti-lateral flexion — resisting side bending. The side plank trains the obliques and quadratus lumborum, muscles essential for spinal stability and lower back health. It is one of the most underused core exercises despite being one of the most important for preventing lower back pain. Hold 30-45 seconds per side.

Primary muscles: Obliques, quadratus lumborum. Type: Anti-lateral flexion. Best for: Lower back health, oblique development, spinal stability.

Full side plank guide

Cable Woodchop

Dynamic rotational core training. The cable woodchop trains the obliques through a full range of motion against resistance. The standing version engages the hips and core together, mimicking athletic rotation patterns. High-to-low targets the lower obliques; low-to-high targets the upper fibers. Essential for rotational sports and complete core development.

Primary muscles: Obliques, rectus abdominis. Type: Rotation. Best for: Rotational power, athletic performance, oblique development.

Full cable woodchop guide

Dead Bug

The beginner-friendly anti-extension exercise that physical therapists love. Dead bugs teach core bracing while moving the limbs independently — a fundamental pattern for all athletic movement. Lie on your back, press your lower back into the floor, and lower opposite arm and leg while maintaining contact. Underrated for building deep core strength.

Primary muscles: Transverse abdominis, rectus abdominis. Type: Anti-extension. Best for: Beginners, rehabilitation, motor control, deep core activation.

Full dead bug guide

Farmer's Carry

The loaded carry that trains the entire core under walking stress. Pick up heavy weights and walk — simple but brutally effective. The two-hand version builds general core stability. The one-hand version (suitcase carry) adds anti-lateral flexion. Farmer's carries also build grip, traps, and conditioning. One of the most functional exercises that exist.

Primary muscles: Full core, traps, grip. Type: Anti-lateral flexion (suitcase), stability (farmer's). Best for: Functional strength, grip, conditioning, total body.

Full farmer's carry guide

Cable Crunch

The best weighted flexion exercise. Unlike floor crunches, the kneeling cable crunch provides constant tension throughout the movement and allows progressive overload through the weight stack. The vertical spine position is safer than lying spinal flexion. If you want to load the rectus abdominis for muscle growth, this is the exercise.

Primary muscles: Rectus abdominis. Type: Flexion (loaded). Best for: Ab muscle growth, progressive overload, visible abs.

Full cable crunch guide

Hollow Body Hold

The gymnastics staple. The hollow body hold is a full-body anti-extension position — lower back pressed into the floor, arms and legs extended, body forming a slight “banana” shape. It builds the core strength needed for advanced movements like handstands and muscle-ups. Progress from tuck to full hollow. Harder than it looks.

Primary muscles: Rectus abdominis, hip flexors. Type: Anti-extension (isometric). Best for: Gymnastics foundation, bodyweight progression, full-body tension.

Full hollow body hold guide

Bird Dog

Anti-extension and anti-rotation combined. The bird dog — extending opposite arm and leg from a quadruped position — is low intensity but high value for core stability, lower back health, and movement quality. It teaches the core to stabilize while the limbs move independently. Excellent warm-up exercise and rehabilitation staple.

Primary muscles: Erector spinae, transverse abdominis, glutes. Type: Anti-extension + anti-rotation. Best for: Lower back health, warm-up, motor control, rehabilitation.

Full bird dog guide

Turkish Get-Up

The full-body stability exercise that challenges the core through multiple planes. From lying flat to standing with a weight overhead, the Turkish get-up demands stability, mobility, and strength in positions most exercises never touch. Heavy loading builds incredible shoulder and core resilience. Advanced movement requiring practice — learn the pattern with no weight first.

Primary muscles: Full core, shoulders, hips. Type: Multi-planar stability. Best for: Advanced lifters, shoulder health, movement quality.

Full Turkish get-up guide

Best Core Exercises by Goal

For Visible Abs (Six-Pack)

Top 3: Hanging leg raise, cable crunch, ab wheel rollout. These exercises directly hypertrophy the rectus abdominis. Remember: visible abs require low body fat (10-15% for men, 18-24% for women) — no exercise makes abs visible through fat.

For Functional Strength / Athleticism

Top 3: Pallof press, farmer's carry, cable woodchop. These train the core how it actually functions: resisting unwanted movement and transferring force between upper and lower body.

For Lower Back Health

Top 3: Dead bug, bird dog, side plank. These are spine-sparing exercises that build stability without compressive loading. Recommended by physical therapists for lower back pain prevention.

For Home / No Equipment

Top 3: Plank, hollow body hold, dead bug. All bodyweight, all effective. Add an ab wheel (under $15) and you have complete core training at home.

How to Build a Core Workout From This List

You do not need all 12 exercises. Here is how to structure a complete core session:

Pick 1 anti-extension exercise: Plank, dead bug, ab wheel rollout, or hollow body hold (2-3 sets)
Pick 1 anti-rotation exercise: Pallof press or bird dog (2-3 sets)
Pick 1 flexion exercise: Hanging leg raise or cable crunch (2-3 sets)
Optional: 1 rotational (cable woodchop) or carry exercise (farmer's carry)

Total: 3-4 exercises, 8-12 sets per core workout. Train core 3-4x per week — these are smaller muscles that recover fast. Always train core at the END of your workout — fatigued core before heavy squats or deadlifts increases injury risk. For detailed volume guidelines, see our sets per muscle group per week guide.

Why Crunches and Sit-Ups Did Not Make the List

Spinal flexion under load is not ideal

Traditional crunches and sit-ups create repeated spinal flexion under load. Research by Dr. Stuart McGill shows this is the exact mechanism for disc injuries — the spine is designed to stabilize, not crunch repeatedly.

Sit-ups are particularly problematic because they are hip flexor dominant, not core dominant. Most of the movement comes from the iliopsoas, not the abs.

Better alternatives exist: Cable crunches allow loaded flexion with a more neutral spine. Hanging leg raises provide bodyweight flexion in a safer position. Planks build endurance without any spinal movement. You do not need crunches or sit-ups for a strong core or visible abs.

Best Core Exercises Ranked by Effectiveness (2026)