Tips to Avoid Neck Pain When Side Sleeping

In order to avoid neck pain when side sleeping, your goal is to maintain the neutral position of your neck throughout the night. Failing to do so can strain your neck for hours during sleep, which contributes greatly to your neck pain and stiffness. In this article, we’ll share a few common and effective tips that can help you sleep better as a side sleeper and prevent neck pain from showing up in your mornings.

The Proper Way to Side Sleep

Side sleeping is one of the best sleeping positions to help you avoid neck pain and stiffness, but if you don’t know how to do it properly, it can be the easiest position to throw your body out of its natural alignment and strain your neck for hours during the night. So, follow the tips below to help you avoid neck pain when side sleeping:

1. Fill the Shoulder Gap

Using the wrong pillow is one of the most common causes of neck pain for side sleepers because not every pillow out there is capable of filling the gap between your head and the mattress when you’re sleeping on your side. This is the main reason many side sleepers have trouble enjoying deep rest at night. Instead, they’re constantly waking up in the middle of the night to adjust their pillow.

As a side sleeper, your goal is to keep your head and neck perfectly in line with each other when you sleep. If your pillow is too low, your head will drop toward the mattress and strain the other side of your neck. On the other hand, if your pillow is too high, it will cause your neck to be at an awkward angle and place heavy tension on the side you’re sleeping on. Neither way is good for your neck. Measure the distance from the base of your neck out to the tip of your shoulder and use this exact measurement to decide the thickness of your side sleeping pillow. This will ensure your pillow perfectly fills the gap between your head and the mattress, maintaining your body’s natural alignment as you sleep.

2. Choose the Right Side Sleeping Pillow Material

Pillow material is very important when it comes to side sleeping. An average person’s head weighs around 10 to 12 pounds. If your side sleeping pillow is not capable of supporting this weight, your head will drop toward the mattress and strain your neck. Sleep in this position for hours, and you’ll wonder why neck pain shows up in the morning.

There are many good pillow materials out there that can provide perfect support for your head and neck when side sleeping, such as polyester, memory foam, water, and latex. Learning more in detail about each of these specific pillow materials will give you an idea of which one would be the best fit for yourself as a side sleeper. Stay away from feather pillows, as this type of pillow is more for comfort instead of structured support. They’re too soft to support the weight of your head when side sleeping. You’ve probably experienced sleeping on feather pillows before in hotels or even at home, where you have to fold them in half or place your hand underneath just to help lift your head up.

3. Avoid Tucking Your Chin

Take a moment to notice your posture just before you drift off to sleep. Many side sleepers instinctively curl up tightly into a fetal position, which often involves tucking the chin down toward the chest.

This position pulls your cervical spine out of alignment and puts continuous tension on the large muscles running along the back of your neck and upper shoulders. This is the exact same posture that strains people’s necks when they’re looking down at their phones for hours. Try to consciously practice keeping your head in a neutral position, looking straight ahead, with your chin perpendicular to your spine. This can help you get rid of this bad habit when sleeping.

4. Support Your Top Arm

When you sleep on your side, your top shoulder naturally tends to collapse forward toward the mattress. This forward rotation twists your upper back and pulls directly on the trapezius and levator scapulae muscles in your neck.

In order to prevent this from happening, you can hug a body pillow or a folded blanket against your chest so your top arm and leg have a place to rest and keep your shoulders stacked vertically. This prevents your upper body from rolling forward and eliminates the constant mechanical pull on your neck muscles.

5. Keep Your Bottom Arm Forward

One habit that many side sleepers develop is that they tend to place their arm under the pillow when side sleeping. The reason is that most of the traditional pillows they slept on are too soft and can’t support the weight of their head; that’s why they either fold the pillow in half or place their hand underneath it for extra support. Doing this long enough causes you to develop this poor habit that’s no longer needed when you sleep on an actual side sleeping pillow designed specifically for side sleepers.

This habit creates two distinct problems. First, it adds unpredictable height to your pillow, lifting your head too high. Second, it can compress the nerves in your shoulder and arm, leading to numbness, tingling, and radiating pain that travels up into the neck. Always make sure to position your bottom arm out in front of you or bent gently at the elbow, away from the underside of your head. Practicing this regularly before dozing off can help you slowly get rid of this habit.

6. Align Your Lower Body

Our spine is a continuous chain; what happens at the bottom of the chain will directly affect the top. If your hips twist during the night, your lower back will follow, which eventually forces your upper back and neck out of position.

To maintain a completely neutral spine from head to toe, place a firm pillow between your knees to help keep your pelvis level, stop your top leg from dropping forward, and ensure your entire spinal column remains straight and stress-free throughout the night.

When to Seek Professional Advice

Most neck pain from side sleeping resolves within a few days of optimizing your pillow setup and body alignment. However, if your neck pain is accompanied by severe numbness, tingling that travels down your arm into your fingers, or sharp, shooting pains, it could indicate a pinched nerve or a structural issue in your cervical spine. If these symptoms persist despite making adjustments to your sleep environment, consult a physical therapist or healthcare professional for a personalized evaluation.

By investing a little time into arranging your side sleeping pillows and checking your posture before you fall asleep, you can protect your neck, improve your sleep quality, and wake up fully ready to face the day.