Diagnostics – Night Time Comfort https://www.nighttimecomfort.com Decode Your Sleep. Recover Fully. Sun, 02 Aug 2026 06:34:00 +0000 en-US hourly 1 https://wordpress.org/?v=5.1.22 Oxygen Desaturation Meaning: ODI, Nadir SpO2 and the 4% Rule Explained https://www.nighttimecomfort.com/odi-nadir-spo2-and-the-4-rule/ Thu, 23 Jul 2026 19:31:14 +0000 https://www.nighttimecomfort.com/?p=2898 Oxygen desaturation means a drop in the oxygen saturation of your blood below its baseline level. In sleep medicine, it specifically refers to your blood oxygen (SpO2) falling by a defined amount — usually 3% or 4% — from the level just before the event. When it happens repeatedly through the night, it’s usually a […]

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]]> Can You Sleep on a Freestyle Libre Sensor? CGM and Sleep, Explained https://www.nighttimecomfort.com/sleep-on-a-freestyle-libre-sensor-cgm-and-sleep/ Fri, 17 Jul 2026 18:51:38 +0000 https://www.nighttimecomfort.com/?p=2868 Short answer to the question in the title: yes, you can sleep on a Freestyle Libre sensor. It won’t break. The adhesive is designed for it, and I’ve slept on mine hundreds of nights. The real question — the one that brought most of you here — is why does my sensor scream “LOW” at […]

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]]> Waking Up With a “Dead Arm”? Numbness, Nerves & Mattress Fixes https://www.nighttimecomfort.com/dead-arm-numbness-nerves/ Tue, 06 Jan 2026 11:07:41 +0000 https://www.nighttimecomfort.com/?p=2464 It starts as a dream. In the dream, you are trying to lift a heavy box, but your left arm is missing. You look down, and it’s just gone. Then, you jolt awake. You try to move your arm to check your phone, but nothing happens. A terrifying, cold, dead weight is lying across your […]

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]]> Silent Reflux (LPR): The “Choking” Sensation That Isn’t Sleep Apnea https://www.nighttimecomfort.com/silent-reflux-lpr/ Tue, 09 Dec 2025 21:21:46 +0000 https://www.nighttimecomfort.com/?p=709 The Invisible Choke : Silent Reflux I don’t have acid reflux. I can drink a double espresso at 8 PM and sleep like a baby (well, as much as my O2Ring and circadian rhythm allow me to). My stomach is lined with steel. But my friend Mark? Mark is a different story. About six months […]

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]]> The Glymphatic System: How Your Brain Detoxes at Night https://www.nighttimecomfort.com/glymphatic-system/ Tue, 09 Dec 2025 20:39:20 +0000 https://www.nighttimecomfort.com/?p=689 The Brain’s Sewage System I used to think of sleep as a passive state. You turn off the lights, the body goes offline, and eight hours later, you reboot. I thought the only “repair” happening was my muscles knitting themselves back together after a workout. I was wrong. When I started my journey to fix […]

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]]> Circadian Rhythms Explained: The Master Clock Behind Sleep & Energy https://www.nighttimecomfort.com/circadian-rhythms-explained/ Mon, 08 Dec 2025 19:35:55 +0000 https://www.nighttimecomfort.com/?p=618 You are lying in bed at 11:00 PM. You are exhausted. You have been awake for 16 hours. By all logic, you should fall asleep immediately. But you don’t. You feel a sudden surge of alertness, a “second wind” that keeps you reading or scrolling until 1:00 AM. Conversely, you struggle to drag yourself out […]

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]]> Tired But Wired Syndrome: The HPA Axis Dysregulation Guide https://www.nighttimecomfort.com/tired-but-wired-syndrome/ Mon, 08 Dec 2025 17:44:12 +0000 https://www.nighttimecomfort.com/?p=591 It is 11:30 PM. Your body feels like lead. Your muscles are aching with fatigue. You have been yawning since dinner. But the moment your head hits the pillow, your brain turns on. It’s not just thoughts; it’s a physical sensation. You feel a “buzzing” in your chest or limbs. Your heart beats a little […]

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]]> Home Sleep Apnea Tests (HSAT) & Polygraphy: Beyond Oximetry https://www.nighttimecomfort.com/home-sleep-apnea-tests/ Fri, 05 Dec 2025 20:15:41 +0000 https://www.nighttimecomfort.com/?p=245 You suspect that you stop breathing at night. Your partner says you snore like a chainsaw, or perhaps you wake up gasping. You have read about the Wellue O2Ring, but you want something more clinical—something a licensed clinician can review as part of a diagnostic work-up. Ideally, everyone would go to a sleep clinic for […]

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]]> Polysomnography vs. Home Tests: What to Expect https://www.nighttimecomfort.com/polysomnography-vs-home-tests/ Fri, 05 Dec 2025 19:41:00 +0000 https://www.nighttimecomfort.com/?p=230 You are exhausted. You snore, or perhaps you just wake up feeling like you were hit by a truck. You suspect Sleep Apnea, UARS, or something worse. You have two choices: You can spend a night in a medical clinic hooked up to 20 sensors (Polysomnography), or you can mail-order a device, strap it to […]

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]]> Restless Legs Syndrome (RLS): Symptoms vs. Normal Fidgeting https://www.nighttimecomfort.com/restless-legs-syndrome/ Fri, 05 Dec 2025 19:11:54 +0000 https://www.nighttimecomfort.com/?p=222 You lie down in bed, exhausted, ready to sleep. But the moment your body relaxes, a creeping sensation begins deep inside your calves. It isn’t pain, exactly. It feels like carbonated water running through your veins, or an itch you cannot scratch because it is under the skin. You kick your leg. The feeling stops […]

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