Sleep & Wake-Up
Resource Center

Science-backed guides to help you sleep better, wake up easier, and make the most of every morning.

All Articles

An iPhone displaying an alarm app interface on a nightstand

7 Best Alarm Apps for iPhone in 2026

The 7 best alarm apps for iPhone in 2026, compared by features, pricing, and who each app is best for. Find the right alarm for your morning routine.

Alarm clock on a nightstand with morning light streaming through a window

How to Stop Hitting Snooze: 7 Science-Backed Strategies

Struggling with the snooze button? Learn 7 proven strategies to stop hitting snooze, beat sleep inertia, and start your mornings with energy and intention.

Diagram showing the progression of sleep stages through a typical night with wave patterns

Sleep Cycles Explained: Stages, Duration, and Why They Matter

Understand the 4 stages of sleep, how 90-minute sleep cycles work, and why waking at the right time in your cycle changes how you feel every morning.

Three audio waveforms in white, pink, and brown colors displayed side by side against a dark background

White Noise vs Pink Noise vs Brown Noise: Which Is Best for Sleep?

Compare white noise, pink noise, and brown noise for sleep. Learn the science behind each noise color and find which one helps you sleep best.

A smartphone screen showing a math puzzle that must be solved to dismiss an alarm

Alarm Apps That Make You Solve Puzzles: Do They Actually Work?

Do puzzle alarm apps actually prevent snoozing? We break down how math, memory, and mission alarms work, the psychology behind them, and better alternatives.

Sound waves emanating from a smartphone alarm on a bedside table

Best Alarm Sounds for Heavy Sleepers (That Actually Work)

Find the best alarm sounds for heavy sleepers. Learn why you sleep through alarms, which sounds are most effective, and how escalating audio actually works.

A pair of headphones resting on a pillow beside a softly glowing bedside lamp at night

The 10 Best Sounds for Sleeping, Ranked by Science

Discover the 10 best sounds for sleeping backed by research. From white noise to rain to ocean waves, find the sleep sound that works for you.

Clock on a bedside table next to a peacefully sleeping person in a dark bedroom

How Much Sleep Do You Actually Need? Age-by-Age Guide

Find out how much sleep you really need by age, from newborns to seniors. Learn to identify your ideal sleep duration and stop guessing.

Person looking at a bright phone screen in a dark bedroom at night

Blue Light and Sleep: How Screens Affect Your Rest

Learn how blue light from screens affects melatonin, sleep quality, and your circadian rhythm — plus practical strategies to reduce its impact.

A white noise waveform visualization on a dark screen in a dimly lit bedroom

Does White Noise Actually Help You Sleep? What the Research Says

Explore the science behind white noise and sleep. Review clinical studies, understand how auditory masking works, and learn if white noise is right for you.

A person laughing while reaching for their phone alarm on a nightstand

Funny Alarm Apps: When Humor Gets You Out of Bed

Why funny alarm apps and comedy-based alarms work better than you'd expect. Explore the science of humor, escalation alarms, and the best comedy alarm options.

Person sitting on the edge of a bed looking groggy in dim morning light

Sleep Inertia: Why Waking Up Feels So Hard (And How to Beat It)

Understand sleep inertia — the science behind morning grogginess. Learn what causes it, how long it lasts, and proven strategies to reduce it every morning.