Melatonin

Shrink Definition

Melatonin is a hormone the brain releases as darkness falls, signaling the body that it's time to prepare for sleep. It doesn't knock you out, it tells your internal clock that night has come. Light, especially at night, suppresses it and can delay sleep. Understanding it explains why dim, dark evenings support better sleep.

Plain language

A hormone released in darkness that signals your body it's time for sleep.

Shrink Insight

Melatonin is a signal for sleep, not a switch that forces it.

Why it matters

It explains why light exposure timing shapes sleep, and why dark evenings help. It clarifies what melatonin does and doesn't do.

Common misunderstanding

People think melatonin is a strong sleeping pill that knocks you out. It's a timing signal that tells your clock night has come, not a sedative.

Shrink Perspective

Melatonin whispers that it's night, it doesn't force sleep.

Shrink Reflection

Does bright evening light delay my sense of sleepiness?

Shrink Step

Dim lights in the evening to let your natural melatonin rise.

Shrink Minute

Notice how bright evening light delays your sense of sleepiness.

Shrink Takeaway

Darkness cues sleep through melatonin.

Medical boundary

Evidence summary

A well-established hormone in circadian and sleep physiology.