Why the Treadmill Motion Makes You Sick
Jake Newby
| 3 min read
Key Takeaways
- Treadmill dizziness often results from a sensory mismatch between your moving body and the stationary environment around you.
- People with motion sickness, migraines or balance disorders may be more likely to experience dizziness after treadmill workouts.
- Slowing down gradually, staying hydrated and focusing on a stationary object can help reduce treadmill-related motion sickness symptoms.
- Persistent dizziness after treadmill exercise may signal an underlying vestibular issue and warrants discussion with a healthcare provider.
If you’ve ever stepped off a treadmill and felt dizzy, unsteady or even nauseous, you’re not alone.
While treadmill-related dizziness can be surprising, the sensation has a lot in common with traditional motion sickness. So, if you’re prone to motion sickness, you may experience this issue during or after a treadmill workout.
Motion sickness occurs when the brain receives conflicting information from the body's sensory systems, particularly the eyes, inner ear and muscles, per the Centers for Disease Control and Prevention (CDC). This sensory conflict can trigger symptoms such as dizziness, nausea, sweating and disorientation. Let’s take a deeper dive into this specific problem.
Why your brain gets confused on a treadmill
When you're running outdoors, your body and visual surroundings move together. On a treadmill, however, your legs are moving while the room around you remains stationary.
Planet Fitness explains that this mismatch can create a disconnect between the body and brain. Your brain perceives forward motion because your muscles are actively running, but your visual environment tells a different story. When you step off the treadmill, your body has to quickly readjust to standing on stable ground, which can leave you feeling off balance.
The CDC described this type of sensory mismatch as one of the most widely accepted explanations for motion sickness. Similar symptoms can occur in cars, boats, flight simulators and virtual reality environments when visual and vestibular signals don't align.
Are some people more susceptible to dizziness on a treadmill than others?
Not everyone experiences treadmill-related dizziness to the same degree. The CDC notes that susceptibility to motion sickness varies widely and can be influenced by factors such as:
- Genetics
- Migraine history
- Vestibular disorders that could affect balance
People who are already prone to motion sickness may be more likely to notice symptoms during or after treadmill exercise.
Dehydration can also play a role. While sensory conflict is often the primary cause, Planet Fitness notes that inadequate fluid intake may contribute to dizziness and fatigue during workouts.
How to prevent treadmill-related motion sickness
If treadmill motion regularly leaves you feeling dizzy, a few simple adjustments may help.
Gradually reducing your speed on the treadmill over the course of several minutes before stepping off the machine – rather than stopping abruptly – could help you avoid some feelings of motion sickness. The CDC also recommends strategies that reduce sensory conflict, such as avoiding excessive visual scanning and practicing controlled breathing techniques.
Try focusing on a stationary object and limiting visual distractions, such as television screens, to help your brain process movement more effectively. Also be sure to hydrate before and during treadmill exercise.
If dizziness persists despite these changes, consider switching to another form of cardio. You can replace this activity with walking or running outdoors, cycling or using an elliptical machine. Recurring symptoms could indicate an underlying balance or vestibular issue worth discussing with your primary care provider. For some people, the best solution may simply be choosing a form of exercise that doesn’t create this sort of sensory conflict.
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Photo credit: Getty Images
