Is Sitting Effecting Your Brain Health?

We know sitting all day isn't great for our backs, hips or waistlines. But researchers are finding that too much time being still may also take a toll on something we don't often connect with movement: our brains.

Inactivity, meaning long stretches of sitting or lying down with little movement, has been linked to faster brain aging, weaker memory and a higher risk of low mood and depression. The encouraging part is that it's one of the most changeable habits there is. You don't need to run marathons. You just need to move more, and more often.

What the research shows

Sitting and the aging brain. A 2025 study from Vanderbilt University Medical Center, published in Alzheimer's & Dementia, followed 404 adults aged 50 and older for seven years. Participants wore activity-tracking watches for a week, then had repeated memory tests and brain scans.

Those who spent more time sitting or lying down showed faster shrinkage of the hippocampus, a part of the brain that's key to memory, along with quicker declines in word-finding and thinking speed. The most surprising finding? Regular exercise didn't fully cancel out the effects of sitting for long periods. In other words, a morning workout followed by a day on the couch may not be enough. The link was strongest in people who carry a gene that raises Alzheimer's risk.

The researchers note that this kind of study shows a connection, not proof of cause and effect. But the takeaway from lead researcher Dr. Angela Jefferson was clear: take breaks from sitting throughout the day.

Movement and mood. On the mental health side, a large 2024 review in The BMJ pooled 218 studies with more than 14,000 people with depression. Exercise moderately reduced symptoms, and strength training, yoga and walking were among the most effective. The researchers concluded that exercise could be considered alongside therapy and medication as a core treatment.

Why moving matters for your mind

Scientists are still working out exactly how inactivity affects the brain, but several explanations stand out:

1. Blood flow. Your brain relies on a steady supply of oxygen and nutrients. Movement keeps blood circulating, while long periods of stillness slow it down.

2. Blood sugar and inflammation. Sitting for long stretches is linked to poorer blood sugar control and more inflammation, both of which can harm brain cells over time.

3. Brain growth factors. Exercise boosts natural chemicals that help brain cells grow and connect, especially in memory centers like the hippocampus.

4. Mood chemistry. Movement releases feel-good chemicals and helps the body manage stress hormones, which is part of why even a short walk can lift your mood.

5. Connection and purpose. Inactivity often goes hand in hand with spending more time alone. Getting up and out, especially to a class or group, brings social connection, which is good for both mood and memory.

Simple ways to sit less and move more

1. Break up your sitting. Stand up and move for a few minutes every 30 to 60 minutes. Set a phone reminder if it helps.

2. Move while you do everyday things. Stand or walk during phone calls, march in place during TV commercials, or do a few calf raises while the coffee brews.

3. Take the long way. Park farther away, use the stairs and walk to a coworker's desk instead of emailing.

4. Add strength work. Muscle-building exercise supports both your body and your mood. Two or more sessions a week is a great goal.

5. Make it social. A walking date with a friend or a group class gives you movement and connection at the same time.

6. Start small. If you've been inactive, even five-minute bouts count. Build from there.

How Pilates helps your body and brain

Pilates is a natural fit for keeping your mind as strong as your body:

1. It builds strength. Strength training was one of the most effective forms of exercise for mood in the research, and Pilates builds strength through every session.

2. It's a workout for your brain, too. Coordinating breath, alignment and movement takes real focus. Learning new exercises and patterns keeps your mind engaged.

3. It calms the nervous system. The steady breathing at the heart of STOTT PILATES® helps ease stress and leaves many clients feeling both energized and relaxed.

4. It counteracts sitting. Pilates strengthens the core, opens tight hips and improves posture, undoing much of what long hours in a chair do to the body.

5. It brings people together. Seeing familiar faces in class gives you connection, accountability and something to look forward to.

6. It meets you where you are. Low-impact and adaptable, Pilates is a safe way to get moving again, whatever your age or fitness level.

Remember, though: an hour of class is a great start, but the research shows that what you do the rest of the day matters too. Use the habits from class, like better posture and core awareness, to keep moving well between sessions.

We'd love to help you get moving. Check our online schedule and sign up for a class in our new studio. www.thepilateseffect.com

This article is for general information and isn't medical advice. If you're experiencing symptoms of depression or memory changes, please talk with your doctor. Check with them before starting a new exercise program.

Sources

• Gogniat MA, et al. Increased sedentary behavior is associated with neurodegeneration and worse cognition in older adults over a 7-year period despite high levels of physical activity. Alzheimer's & Dementia, 2025.

• Study reveals sedentary behavior is an independent risk factor for Alzheimer's disease, Vanderbilt University Medical Center

• Noetel M, et al. Effect of exercise for depression: systematic review and network meta-analysis of randomised controlled trials. The BMJ, 2024.

• Inspired by This Habit Is Aging Your Brain Faster Than You Think, EatingWell