UnityLife
Fitness4 min readUpdated Apr 23, 2026Some evidence

Lower Ab Workouts: 5 Exercises That Actually Target the Lower Abs

Most “lower ab” exercises just hit your hip flexors. Here are 5 that actually bias the lower part of the rectus abdominis — with cues that make the difference.

James Park

Medically reviewed by James Park, CSCS

Strength coach, Toronto ON

Written by UnityLife Admin

Updated April 2026 · Reviewed April 2026

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Your rectus abdominis is one continuous muscle from ribs to pelvis, but EMG studies show you can bias different sections with different exercise choices. “Lower ab” training really means emphasizing the fibres that move the pelvis toward the ribs rather than the other way around. These 5 drills, done with the right cues, put the work where you want it.

The rule that separates lower-ab work from hip-flexor work

If your lower back arches off the floor during an ab move, you’re working your hip flexors.

If your low back stays flat and your pelvis tips toward your ribs, you’re working your lower abs. Every cue in this article is built around keeping that connection.

Exercise 1: Dead bug

Lie on your back, arms and knees at 90. Press your low back into the floor. Slowly lower one arm overhead and the opposite leg straight, keeping low back glued down.

3 × 8 per side. If your back arches, shorten the range.

Exercise 2: Reverse crunch

Lie on your back, knees up, hands behind head. Curl the pelvis toward the ribs — lift your hips an inch off the floor without swinging your legs.

3 × 10. This is a small movement, not a big one.

Exercise 3: Hollow body hold

Lie on your back, press low back into floor, lift legs to 45 degrees and shoulder blades off the floor, arms by ears.

Hold 20–45 seconds. 3 rounds.

Exercise 4: Hanging knee raise

Hang from a pull-up bar. Tuck your pelvis and lift your knees toward your belly button — not just toward the ceiling.

3 × 8. Quality beats quantity.

Exercise 5: Leg lowers

Lie on your back, both legs up at 90. Slowly lower both legs toward the floor until your low back starts to lift, then come back.

3 × 8.

Programming the routine

Do 2–3 of these exercises at the end of a workout, 3 times a week.

Progress by holding longer (for isometrics) or adding 1 rep per week. You will not see abs without a reasonable overall body-fat level — training them does build the muscle underneath.

The bottom line

The lower abs respond to small, precise movements done well. Master the dead bug and reverse crunch first — the harder drills are earned from there.

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The bottom line

The lower abs respond to small, precise movements done well. Master the dead bug and reverse crunch first — the harder drills are earned from there.

Frequently asked questions

  • 2–3 exercises, 3 sets each, at the end of a workout. More is not better.

Sources & further reading

  1. Health Canada — Food and Nutrition
  2. Dietitians of Canada

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