Restless Legs Syndrome (RLS)
Updated June 2026
Last updated: June 2026 - Reviewed by the Apexzen editorial team
Part of: Sleep Disorders Atlas > Movement Disorders
What is it? Restless legs syndrome (RLS), also known as Willis-Ekbom disease, is a neurological disorder marked by an uncontrollable urge to move the legs, usually triggered by an uncomfortable sensation. It typically shows up in the evening or night when you are sitting or lying down - exactly when you are trying to wind down for sleep.
The symptoms that keep your legs moving
- An overwhelming urge to move the legs, often with creeping, crawling, pulling, or itching sensations
- Symptoms begin or worsen during rest, such as sitting or lying down
- Temporary relief from movement - walking or stretching settles it for a while
- Symptoms are worse in the evening or at night
- Jerky, involuntary leg movements during sleep (periodic limb movements of sleep)
Check your iron first
RLS is frequently linked to low iron stores. Before trying anything else, ask your doctor for a ferritin blood test. If your ferritin is low, correcting it - under medical supervision - is often the single most effective move. Do not start iron supplements on your own; too much iron is harmful.
What actually helps
If you are wondering how to stop restless legs immediately in the moment, movement is your fastest lever: get up and walk, stretch the calves, or massage the legs. A warm bath before bed and a consistent sleep schedule both calm the nervous system over time. Cutting caffeine and alcohol in the evening helps too.
For lasting restless legs syndrome relief, the order matters: rule out iron deficiency first, build steady sleep hygiene second, and in more severe cases a doctor may prescribe medication. Supplements sit underneath those habits, not on top of them. Magnesium glycinate is a gentle, well-tolerated option many people use to support relaxation and a calmer wind-down routine.
When to see a doctor
If symptoms are frequent, cause real distress, disrupt your sleep, or affect your quality of life, see a doctor for an accurate diagnosis and treatment plan. Ask specifically about a ferritin test - RLS is often iron-linked, and that single check can change everything. A clinician can also review medications that may be making symptoms worse.
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Take the Chronotype QuizFrequently asked questions
How do I stop restless legs immediately?
In the moment, movement is the fastest relief: stand up and walk, stretch your calves, or massage your legs. A warm bath before bed and cutting evening caffeine and alcohol also help. For lasting relief, get your iron checked and build a steady sleep routine.
Does magnesium cure restless legs syndrome?
No. Magnesium can support relaxation and a calmer wind-down as part of good sleep hygiene, but it is not a treatment or cure for RLS. The most important first step is checking your iron (ferritin) with your doctor.
Why does my doctor want to check my ferritin?
Low iron stores are one of the most common contributors to RLS. A ferritin blood test shows whether your iron is low, and correcting a deficiency - under medical supervision - can significantly reduce symptoms.
Related reading: Chronic Insomnia, Sleep Bruxism (Teeth Grinding), and Magnesium Glycinate for Sleep.
Sources: American Academy of Sleep Medicine, clinical guidance on restless legs syndrome and iron status. Mayo Clinic, Restless Legs Syndrome - Diagnosis and Treatment.
This article is for educational purposes only and is not medical advice. These statements have not been evaluated by the Food and Drug Administration. Apexzen products are not intended to diagnose, treat, cure, or prevent any disease. Consult a qualified healthcare provider for persistent or distressing symptoms.