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Emilia Zyla

Sleep Ergonomics Researcher

Emilia matches pillows to body geometry and sleep position, using published biomechanics research on loft, firmness, and spinal alignment.

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on June 2026

Your Pillow Is Probably Causing Your Headaches. Here Are 7 That Won’t.

A pillow that holds your head at the wrong angle for 7 or 8 hours every night loads the upper cervical spine, and that sustained mechanical stress is a documented trigger for cervicogenic headache. The seven pillows here are matched to sleep position and shoulder geometry using manufacturer specs and ... read more about Your Pillow Is Probably Causing Your Headaches. Here Are 7 That Won’t.

on June 2026

Medium vs. Firm Pillow: Which One Your Sleep Position Actually Requires

The position you sleep in determines what structural job the pillow needs to do. That job is the starting point. Firmness is a modifier, not the primary variable. What Firmness Actually Describes Before getting into position-specific guidance, it helps to be precise about what firmness means in a pillow context, ... read more about Medium vs. Firm Pillow: Which One Your Sleep Position Actually Requires

on June 2026

Pillow Loft Calculator: Find Your Exact Height in 3 Steps

Your neck doesn’t care what the packaging says. A “medium loft” pillow rated at 4 inches does one thing for a 200-pound side sleeper with broad shoulders on a firm mattress, and a completely different thing for a 130-pound back sleeper on a plush one. The physics are simple: loft ... read more about Pillow Loft Calculator: Find Your Exact Height in 3 Steps

on June 2026

7 Best Pillows for Broad Shoulders (High Loft & Firm Support)

If you have broad shoulders and sleep on your side, you’ve probably lived the same frustrating cycle: buy a “side sleeper pillow,” wake up with a stiff neck anyway, stack a second pillow on top, wake up with a different stiff neck. The problem isn’t you, and it usually isn’t ... read more about 7 Best Pillows for Broad Shoulders (High Loft & Firm Support)

on June 2026

Best Pillows for Side Sleepers: Loft and Shoulder Gap Picks

Most side sleeper pillows fail not because they’re bad, but because “high loft” is a category, not a measurement. Your shoulder gap is the number that decides which pick here is right for you and it shifts based on your mattress firmness. Not sure of yours? Find your exact loft ... read more about Best Pillows for Side Sleepers: Loft and Shoulder Gap Picks