How to Do Leg Raises: Floor and Hanging Options
Learn leg raise technique, hip-flexor and abdominal roles, and beginner options. Progress from bent-knee floor practice before trying hanging variations.
A leg raise brings the legs toward the trunk. It can be performed lying on the floor, supported on the forearms or hanging from a bar, and those versions have very different demands. The hip flexors help lift the legs while the abdominal muscles control the pelvis and trunk. Treating the movement only as a way to burn lower-belly fat can lead to unrealistic expectations and an unsuitable starting variation.
What muscles do leg raises work?
The iliopsoas and other hip flexors bring the thighs toward the body. The abdominal muscles contribute to trunk and pelvic control, with additional movement roles when the pelvis curls. Hanging variations also load the grip and shoulder region. Feeling effort at the front of the hips does not automatically mean the exercise is being done incorrectly.
Why lower-ab isolation is an incomplete explanation
The abdominal muscles, hip flexors and supporting muscles work together. Leg length, knee angle and movement range change the leverage. Feeling one region more strongly does not mean that fat there is being selectively removed or that only those muscle fibres are working. The abdominal exercise guide covers wider programme and appearance expectations.
Start on the floor with bent knees
- Lie on a mat with the knees bent and feet on the floor. Keep the head and neck comfortable.
- Gently prepare the trunk without holding the breath or squeezing as hard as possible.
- Slowly lift one foot and bring the knee comfortably toward the trunk. Notice whether you can control the pelvis and lower-back position.
- Return the foot and repeat on the other side. Once this feels manageable, a two-leg bent-knee option can be considered.
- If the lower back arches without control as the legs lower, shorten the range or return to one leg at a time.
Lowering two straight legs all the way to the floor is not a beginner requirement. Bending the knees and reducing the range shorten the lever. The useful checkpoint is controlled movement while breathing, rather than how close the feet get to the floor.
How to approach hanging leg raises
First check bar security, hanging tolerance and grip. The hanging variation is a more advanced choice; the Catalyst Athletics reference describes its trunk- and hip-flexion demands.
From a settled hang, bend the knees and lift under control. Avoid creating momentum by swinging forward and backward. Lower slowly and allow the swing to settle before repeating. Straight legs or toes-to-bar are not compulsory goals. If you cannot hang securely, there is no need to force this variation simply to train the abdomen.
Plan how to reach and leave the bar safely. End the set before grip loss forces an uncontrolled dismount. A more demanding variation is useful only when its additional demands match your ability and training aim.
Common mistakes and adjustments
| Observation | First adjustment | Checkpoint |
|---|---|---|
| Throwing the legs upward | Bend the knees and shorten range | Limited swinging |
| Lower back rapidly arching on descent | Use one leg or a shorter range | Pelvic control |
| Holding the head off the floor | Support the head comfortably | Less unnecessary neck effort |
| Grip opening during a hang | Finish the set safely | Controlled exit |
Changing knee angle can make a substantial difference even without adding weight. Record the variation so that easier and harder versions are not counted as the same performance.
Weekly practice and progression
One or two short sets, such as 5–8 controlled repetitions per side, can be a learning option. When the same range becomes manageable, add a small number of repetitions before changing knee angle or range. Straightening the legs and adding external load at the same time is unnecessary.
Leg raises, planks and cable crunches offer different tasks. All three do not have to be trained at high volume in every session. If adding hanging work to pull-ups, include the shared grip and shoulder demands in the weekly workload. Short controlled sets are easier to review than longer sets dominated by momentum.
Frequently asked questions
Do leg raises only work the lower abs?
No. The hip flexors lift the legs and the abdominal muscles help control the pelvis and trunk. Hanging versions also load the grip and shoulders.
Do my legs have to stay straight?
No. Bent knees, a shorter range or one-leg practice can make control easier. Straight legs increase leverage demands.
Are hanging leg raises suitable for every beginner?
Not necessarily. They require secure hanging, grip and swing control. Easier floor options can provide a more manageable starting point.
Related guides and tracking
Record your exercise variation, load and repetitions. Explore the planned tracking features and mobile app information. The mobile app has not been released yet.
Sources
- Catalyst Athletics: Hanging Leg Raise
- ACE: An evidence-based approach to training the abdominals
- ACSM: Progression models in resistance training for healthy adults
Sources checked; no clinical expert review has been performed.
