I kept waking up exhausted until a NASA scientist shared her $0 lab-tested tip for beating morning grogginess — here’s how it works
And that build-up of broken sleep makes me feel punch-drunk some mornings.I tried easing the grogginess with caffeine, but it didn’t work. Erin Flynn-Evans, Director of the Fatigue Countermeasures Laboratory at NASA Ames Research Center, I now know why…“Caffeine takes time to take effect, so it’s not the best tool to use if you have to wake up and act quickly,” Dr. Flynn-Evans explains, whereas light activates retinal pathways immediately.Well, my job doesn’t require me to perform complex tasks straight after waking.
- ▪And that build-up of broken sleep makes me feel punch-drunk some mornings.I tried easing the grogginess with caffeine, but it didn’t work.
- ▪Erin Flynn-Evans, Director of the Fatigue Countermeasures Laboratory at NASA Ames Research Center, I now know why…“Caffeine takes time to take effect, so it’s not the best tool to use if you have to wake up and act quickly,” Dr.
- ▪Flynn-Evans explains, whereas light activates retinal pathways immediately.Well, my job doesn’t require me to perform complex tasks straight after waking.
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| Original publisher | Tom's Guide |
| Canonical URL | https://www.tomsguide.com/wellness/sleep/i-kept-waking-up-exhausted-until-a-nasa-scientist-shared-her-usd0-lab-tested-tip-for-beating-morning-grogginess-heres-how-it-works |
| Publication time | Thu, 30 Jul 2026 05:30:00 +0000 |
| Retrieval time | 2026-07-30T05:33:40.578Z |
| Last seen | 2026-07-30T05:33:40.578Z |
| Headline source | Publisher (no WeSearch rewrite) |
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| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | XY1apsoOf2Hs · 1 stories |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
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| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Wellness Sleep Sleep Problems I kept waking up exhausted until a NASA scientist shared her $0 lab-tested tip for beating morning grogginess — here’s how it works Features By Claire Davies (CSSC) Published 30 July 2026 Blue light isn't the enemy, it’s a powerful biological switch—we've just been using it at the wrong time of day When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. (Image credit: Future/Getty/Edited by Adobe AI) Jump To: What sleep inertia feels like When to use blue light therapy How long to use blue light for Causes of sleep inertia Other ways to reduce grogginess Sleep tech for energy Copy link Facebook X Reddit Email Share this article 0 Join the conversation Follow us Add us as a preferred source on Google Newsletter…
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