Portrait of Thomas Greenwood, JavaSleep contributor
JavaSleep Contributor

Thomas Greenwood

24 pieces published
A close-up portrait of a sleepless young woman lying awake on her side in…
Sleep Deprivation June 2026 · 4 min

What 60 Percent Actually Means: One Number About Sleep Deprivation and the Emotional Brain

There is a number that gets passed around in sleep talks and TED-style explainers: after a sleepless night, the brain's fear center becomes 60 percent more reactive. It sounds like a verdict.

By Thomas Greenwood · Read →
A close-up macro photograph of a fingertip pulse oximeter clipped onto a person's index…
Sleep Apnea June 2026 · 10 min

When Obstructive Sleep Apnea Comes With Company: The Lungs Next Door

I borrowed a fingertip pulse oximeter from a friend who climbs mountains, clipped it on before bed, and taped the little screen to the back of my hand so it faced the ceiling.

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A serene bedroom at 6 a.m. in early winter, soft blue pre-dawn light filtering…
Sleep June 2026 · 5 min

The 6 a.m. New Year's Resolution: I Spent 30 Days Tracking Whether an Earlier Wake-Up Actually Made Me Better

Every January, the same resolution surfaces in my notes app like a buoy: wake up at 6 a.m. It is one of the most common New Year's resolutions in the wellness-adjacent world I live in — earlier…

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A photorealistic medium shot of a middle-aged man sleeping on his back in a…
Sleep Apnea June 2026 · 5 min

Sleep Apnea Is Not Really a Sleep Problem

Obstructive sleep apnea is filed in the wrong drawer. We call it a sleep disorder, treat it in sleep clinics, and measure it in events per hour of sleep.

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Close-up portrait of a person's face in a darkened bedroom, the cool blue glow…
Sleep June 2026 · 9 min

The Best VR Accessory for Your Quest 3 Might Be the One That Lets You Stop Wearing It

The most useful thing you can buy for a Meta Quest 3 is not a better controller or a louder pair of strap-mounted speakers.

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A moody, intimate nighttime photograph of a dimly lit bedside scene: a single half-full…
Sleep June 2026 · 5 min

A Nightcap and Sleep Apnea: Why the Drink That Knocks You Out Makes Your Airway Worse

A drink before bed helps you sleep. Most people believe some version of this, and they are not crazy to.

By Thomas Greenwood · Read →
A photorealistic nighttime scene in a softly lit child's bedroom, captured at eye level…
CPAP June 2026 · 4 min

CPAP for Pediatric Sleep Apnea: What Most Parents Do, What the Evidence Says, and What Actually Works at 9 p.m.

There is a particular silence in a house where a child has just been prescribed CPAP. The machine arrives in a box. It hums.

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A photorealistic interior shot of a dome tent at night, illuminated softly from within…
CPAP June 2026 · 6 min

CPAP Batteries and the Quiet Math of Camping With Sleep Apnea

Search any camping forum for sleep apnea and you'll hit the same number within three posts: 100 watt-hours.

By Thomas Greenwood · Read →
A photorealistic close-up of a modern white CPAP machine resting on a dark wooden…
CPAP June 2026 · 6 min

The Air Quits Before the Patient Does: A Mechanical Look at Sleep Apnea Treatment Compliance

The number you'll hear is 50 percent. Roughly half of people prescribed CPAP for obstructive sleep apnea aren't using it well a year later.

By Thomas Greenwood · Read →