Type "best ab exercises" into Google and you will get a hundred listicles with the same fifteen moves in different orders. This guide is different. We ranked each exercise using three transparent criteria: core muscle activation (drawn from EMG research), joint friendliness (lower back and neck stress), and learning curve (how fast a beginner can use it safely). Every exercise includes form cues, the muscles it targets, a sample progression, and how to plug it into a complete ab program.
How We Ranked These Exercises
Three criteria, each scored from 1 to 10. First, core activation: how much muscle activity does the exercise produce in the rectus abdominis, obliques, and transverse abdominis (drawn from published EMG studies). Second, joint friendliness: how much stress does it place on the lower back, neck, and hip flexors (lower is better). Third, learning curve: how quickly can a beginner perform it with good form (faster is better). The composite score determined the ranking. Exercises that scored high on activation but low on joint friendliness (like the traditional situp) ranked lower than safer alternatives with similar activation.
The Top 15 Ab Exercises
1. Hanging Leg Raise
The undisputed king of ab exercises. The hanging leg raise produces near-maximal activation of the rectus abdominis (especially the lower portion), significant oblique activation, and forces the transverse abdominis to stabilize the spine against the pull of the legs. It is also joint-friendly when done with proper form: the spine stays neutral, the hip flexors assist but do not dominate, and there is no neck stress. The catch: it requires a pullup bar and reasonable shoulder and grip strength.
Form cues: hang from a pullup bar with arms fully extended, engage the lats to stop the body from swinging, raise the legs by flexing the abdominals (not the hip flexors) until they are parallel to the floor or higher, lower under control over 2 to 3 seconds. Avoid swinging, kipping, or using momentum. If you cannot do a clean rep, start with hanging knee raises and progress.
2. Cable Crunch
The cable crunch is the best weighted ab exercise because it provides constant tension through a full range of motion and allows precise load progression. The cable stack lets you start light and add 2.5 pounds at a time, which is impossible with bodyweight exercises. EMG studies show cable crunches produce 90 to 95 percent of maximal rectus abdominis activation, second only to the hanging leg raise. The movement also trains spinal flexion against resistance, which is the primary function of the rectus abdominis.
Form cues: kneel in front of a cable machine with a rope attachment set to the high pulley, hold the rope behind your head, flex your spine (think of crunching your ribcage toward your pelvis) against the resistance, pause briefly at the bottom, return under control. Do not flex at the hips; the movement is spinal flexion, not a hip hinge. Keep the hips stationary and let the abs do the work.
3. Ab Wheel Rollout
The ab wheel rollout is brutally effective because it forces the abs to work eccentrically (lengthening under tension) through a long range of motion. The movement also engages the obliques, transverse abdominis, and lats as stabilizers. The challenge: it is hard. Beginners often cannot do a single clean rep from the knees. The progression is from a partial range rollout, to a full knee rollout, to a standing rollout, which is one of the most demanding ab exercises in existence.
Form cues: kneel on a pad with the ab wheel in front of you, brace your abs hard, slowly roll the wheel forward keeping your back flat (not arched), go as far as you can while maintaining a neutral spine, then use your abs to pull the wheel back. The most common mistake is letting the lower back arch as you roll out. If your back arches, you have gone too far. Reduce the range and build up.
4. Weighted Decline Situp
The weighted decline situp is a classic hypertrophy movement for the rectus abdominis. The decline angle increases the range of motion and the difficulty, and the added weight allows progressive overload. EMG activation is high (85 to 90 percent of max). The caution: this exercise loads the spine and is not suitable for people with existing lower back issues. If you have any back pain, swap this for the cable crunch.
Form cues: set a decline bench to a 30 to 45 degree angle, hold a weight plate or dumbbell against your chest, lower under control until your back is just above the bench, crunch back up using your abs (not momentum). Do not go all the way down and bounce; the bottom of the movement is where the abs stretch and work the hardest, and bouncing removes that work.
5. Plank
The plank is the best isometric ab exercise. It produces moderate rectus abdominis activation but high transverse abdominis activation, which is what stabilizes the spine in daily life. The plank is also joint-friendly, scalable (from knee plank to weighted plank), and a useful teaching tool for the abdominal brace that underlies all heavy lifting. Its weakness: it does not train spinal flexion, so it does not build the visible six pack hypertrophy that weighted movements do.
Form cues: start in a forearm plank position with elbows under the shoulders, forearms parallel, body in a straight line from head to heels. Brace the abs hard (imagine bracing for a punch), squeeze the glutes, and hold. Do not let the hips sag or pike up. The plank is only effective if you actively brace; passively holding the position is far less useful.
6 to 10: Russian Twist, Dead Bug, Side Plank, Hollow Body Hold, Reverse Crunch
These five exercises round out the top ten. The Russian twist trains rotational core strength (obliques) but must be done with a straight back and controlled range to protect the spine. The dead bug is the best beginner ab exercise because it teaches the abdominal brace with zero spine load. The side plank trains the obliques isometrically and is far more functional than side bends. The hollow body hold is a gymnastics staple that builds total-body tension and isometric ab strength. The reverse crunch targets the lower rectus abdominis with minimal spine load.
11 to 15: Mountain Climbers, Bird Dog, Standing Cable Chop, Pallof Press, Bicycle Crunch
The final five are valuable for variety and specific functions. Mountain climbers are a dynamic plank variation that adds a cardio element. The bird dog is a Stuart McGill favorite for spinal stability and is one of the safest ab exercises for people with back issues. The standing cable chop trains anti-rotation and is excellent for athletes. The Pallof press trains anti-rotation isometrically. The bicycle crunch is a bodyweight exercise with high oblique activation in EMG studies, though it can aggravate the lower back if done with poor form.
Sample Ab Workouts Using These Exercises
Beginner Workout (3x per week)
- Dead bug: 3 sets of 8 reps per side
- Plank: 3 sets of 30 second holds
- Reverse crunch: 3 sets of 12 reps
- Bird dog: 3 sets of 10 reps per side
Intermediate Workout (3x per week)
- Hanging knee raises: 3 sets of 12 reps
- Cable crunch: 3 sets of 12 reps at a moderate weight
- Ab wheel rollout (knee): 3 sets of 8 reps
- Side plank: 3 sets of 30 second holds per side
- Russian twist (bodyweight): 3 sets of 20 reps total
Advanced Workout (4x per week)
- Hanging leg raise (straight leg): 4 sets of 10 reps
- Cable crunch (heavy): 4 sets of 8 reps
- Ab wheel rollout (knee full range or standing partial): 3 sets of 6 reps
- Weighted decline situp: 3 sets of 10 reps with 25 lb plate
- Hollow body hold: 3 sets of 45 second holds
How to Progress These Exercises
Progressive overload applies to abs just like any other muscle. For weighted exercises (cable crunch, weighted decline situp), add 2.5 to 5 pounds when you can complete all sets and reps with two reps in reserve. For bodyweight exercises (hanging leg raise, plank), increase the rep count or the hold time, or move to a harder variation (straight leg from bent knee, weighted from bodyweight). For the ab wheel, increase the range (partial to full knee, then standing partial). Track your weights and reps in a log; what gets measured gets progressed.
Featured Snippet: Quick Answer
The 5 best ab exercises, ranked by core activation, joint friendliness, and learning curve, are: 1) hanging leg raise, 2) cable crunch, 3) ab wheel rollout, 4) weighted decline situp, and 5) plank. A complete ab program uses 2 to 3 weighted exercises for hypertrophy (8 to 15 reps) and 1 to 2 bodyweight or isometric exercises for stability, trained 2 to 4 times per week with progressive overload.
Frequently Asked Questions
What is the single best ab exercise?
The hanging leg raise. It produces near-maximal activation of the rectus abdominis (especially the lower portion), significant oblique activation, and forces the transverse abdominis to stabilize the spine. It is also joint-friendly when done with proper form.
Are situps a good ab exercise?
Situps are okay but not great. They produce decent rectus abdominis activation but place significant shear force on the lower back and dominate with the hip flexors. The cable crunch and hanging leg raise are safer and more effective alternatives.
Do planks build visible abs?
Planks build isometric core strength, which is valuable, but they do not build the muscular hypertrophy that makes abs visible. Combine planks with weighted exercises like cable crunches and hanging leg raises for best results.
How many ab exercises should I do per workout?
Four to five exercises per workout is plenty. Pick two weighted movements for hypertrophy, one or two bodyweight movements for stability, and one isometric (plank, side plank, hollow body). Three to four sets per exercise.
Should I do ab exercises every day?
No. Abs recover faster than large muscles but they still need 48 hours between hard sessions. Train abs two to four times per week with progressive overload. Daily training produces diminishing returns and increases injury risk.
What is the best ab exercise for lower abs?
The hanging leg raise and the reverse crunch are the best for targeting the lower portion of the rectus abdominis. The lower abs work hardest in movements that involve posterior pelvic tilt and leg raising, not spinal flexion.
Are ab exercises safe for the lower back?
Most ab exercises are safe with proper form, but some (situps, Russian twists with poor form) can stress the lower back. If you have back issues, focus on dead bugs, bird dogs, planks, and cable exercises with controlled ranges.
How many reps should I do for ab exercises?
For hypertrophy (visible ab muscle), use the 8 to 15 rep range with weighted resistance. For endurance, use 20 plus reps. Visible abs require hypertrophy, so prioritize weighted work in the 8 to 15 range. Endurance work builds stamina but not size.