Is there a perfect sitting posture?

The Truth About Sitting Posture: Physical Therapy Tips for Preventing Neck and Back Pain

When it comes to preventing neck and back pain, most people have heard the usual advice: sit up straight, keep your feet flat on the floor, and support your lower back. While these tips can be helpful, they don’t tell the full story of how to sit comfortably for long periods.

The truth is, there’s no such thing as a “perfect” sitting posture, and that’s a key principle in physical therapy. In fact, the best sitting posture is one that constantly changes. Our bodies are designed to move, not remain still for long periods, whether we’re sitting, standing, or lying down. Just as you naturally shift your weight when standing, sitting should involve frequent adjustments to prevent discomfort and long-term issues.

Why Static Sitting Causes Problems

When we sit for long periods—especially while working or focusing on a task—we tend to lock into one position. This prolonged stillness can lead to tension, stiffness, and ultimately pain, particularly in the neck and lower back. This is where physical therapy plays a vital role: teaching us how to adjust our habits and posture to reduce the strain on our bodies.

Sitting in one static posture for too long, even if it’s “perfect,” is not ideal. The key is to introduce small, consistent movements that engage the muscles and reduce pressure on certain parts of your body. It’s not about sitting in one way forever; it’s about finding ways to keep your body active, even while seated.

Physical Therapy-Backed Tips for Comfortable Sitting

Here are two simple yet highly effective tips that can help you sit more comfortably during long periods of work or study:

1. Keep Moving: Small Adjustments Make a Big Difference
While it might seem counterintuitive, fidgeting while sitting can be beneficial. Making small adjustments—such as shifting your weight from side to side, crossing and uncrossing your legs, or adjusting the height of your chair—helps prevent muscle tension from building up.

Physical therapists often recommend this kind of regular movement because it engages different muscle groups, reducing strain on your lower back and neck. The more often you change your posture, the less likely you are to experience discomfort later in the day.

In fact, if you’re experiencing ongoing pain from sitting too long, a consultation with a physical therapist could help you learn more personalized movement strategies to relieve discomfort and prevent future issues.

2. Give Your Eyes a Break: The 20/20/20 Rule
There’s a strong connection between extended screen time and discomfort in the upper body, particularly around the neck, shoulders, and eyes. This is known as visual strain, and it’s a common issue in today’s digital world. When your eyes are fixed on a screen for long periods, it leads to tension that can affect your entire posture.

To alleviate this, optometrists recommend the 20/20/20 rule: every 20 minutes, take a 20-second break and look at something 20 feet away. This helps relax the muscles in your eyes and reduces tension in your upper body.

Incorporating this simple practice into your routine can significantly reduce the risk of neck and shoulder pain, especially if you spend a lot of time in front of a computer.

If you’re experiencing discomfort from long hours of sitting at work or school, I have great news. We’re offering a Low Back Pain Workshop on Saturday, October 5th at 9 AM. This workshop is perfect for anyone struggling with back pain and looking for immediate solutions that can be implemented at home or work.

During the workshop, we’ll cover practical strategies from physical therapy that you can use right away to relieve low back pain, improve your posture, and keep your body active—even when sitting for long periods.

Interested? Click here to sign up and get more information!

Stop Standing Straight

“Stand up straight!”

If your parents were anything like mine, you heard that growing up and when I started my career as a physical therapist, I assumed that I would be telling my patients to do the same.

However, that has not been the case.

As a sports physical therapist here in Bethesda, I find this cue to be detrimental to how the body functions. In fact, correcting the need to stand up straight has been one of the most helpful suggestions during physical therapy sessions and throughout the injury rehabilitation process.

Standing up straight causes you to pull your shoulder blades down and back, which limits the amount of movement available to your shoulder blades. The shoulder blades are meant to elevate and abduct (move apart) as the arm is moving away from the body. Just try to keep your shoulder blades down and back as your reach for something!

The cue to stand up straight also commonly causes people to arch their back and tip their pelvis forward. This position places increased strain on the lower back and pelvis, while limiting the amount of motion that is available at the hips.

Correcting this posture is of particular importance for athletes. Every sport has an amount of movement that is necessary to perform it. Golf requires a large amount of rotation at the hips, serving a tennis ball requires a great deal of shoulder flexion, and sprinting requires lot of hip extension.

“Standing up straight” while performing these activities will limit the movements necessary to perform these activities and can often lead to injuries.

This is not to say that this cue is a bad thing. However, it is important to understand when this cue is helpful and when it is not.

Cues like “standing up straight” may work for drills such as deadlifts, rows, and farmers carries, however it is useful to forget this cue for other activities and when attempting to correct your posture!

How to “Fix” Rounded Shoulders

As physical therapists, we often answer questions pertaining to “poor posture.” One of the most common reports from our patients in Bethesda and Chevy Chase is having “forward shoulders.”

The solution to this, which is often taught by other physical therapists, is to stretch the muscles in the front of the shoulders. The most common of these muscle groups is the pecs.

The logic goes something like this. “Your pecs are tight and pulling your shoulders forward. If you stretch them, your shoulders can move back and correct your posture.”

While this reasoning isn’t necessarily wrong, it is shortsighted. It fails to question why muscles like the pecs became tight in the first place. Simply stretching these muscles won’t correct the root cause of the issue.

The shoulder complex rests on top of the rib cage and the pecs attach to the sternum (ribs 1-7 attach to the sternum) as well as the ribs on the front of the rib cage.

As we breath in the rib cage should expand in 360 degrees and as we breath out it should do the opposite.

People with forward shoulders and stiff pecs often have difficulty expanding the front part of their rib cage during a relaxed breath in. This prevents the pecs from lengthening fully and often causes them to remain stiff, pulling the shoulders forward.

If you are looking to improve your posture and “pull your shoulders back”, the solution must include breathing exercises that emphasis relaxation and expansion of the chest/front part of the rib cage.

Here is an example from our YouTube page that illustrates this concept.

If you are looking to improve your posture or shoulder function, contact us now!

Photo Credit

“Orlando’s Poor Posture” by hewy is licensed under CC BY-NC-ND 2.0