Sunlight - Really? -Stress, Blood sugar, Sleep and Immune System?
Your circadian rhythm is your body’s 24-hour internal clock that regulates everything from hormone release to sleep-wake cycles.
Morning sunlight exposure (especially blue light from the sun, not screens!) enters through your eyes → signals the brain’s suprachiasmatic nucleus (SCN) → sets your body clock for the day.
This affects-
  • Cortisol (stress hormone) timing
  • Melatonin (sleep hormone) production
  • Insulin sensitivity
  • Immune system balance
Circadian Rhythm Controls Hormones That Affect Acne
When your circadian rhythm is disrupted (think: irregular sleep, late-night screen use, artificial light), several acne-related problems happen -
Hormone/SystemWhat Circadian Disruption DoesAcne EffectMelatonin
  • Less antioxidant protection
  • More skin inflammation
  • Cortisol rises (at night) Chronic stress mode activated
  • Oil overproduction, worsened acne
  • Androgens rise.
  • More DHT/testosterone activity
  • More sebum, more clogged pores
  • Insulin resistance
  • Poor glucose handling
  • Hormonal imbalance, breakouts
Good Sunlight = Clearer Skin Clock
Morning sun exposure helps-
  • Reset your circadian rhythm daily
  • Regulate cortisol (spikes in the morning, drops at night)
  • Trigger healthy melatonin production at night (from serotonin made during the day)
  • Improve sleep → better skin recovery and healing
Vitamin D production from sunlight also modulates immune responses and inflammation—key for acne control.
Poor Circadian Habits = Hormonal Acne Storm
If you-
  • Stay up late
  • Use screens at night (blue light mimics daytime)
  • Don’t get natural light in the morning
You may be stuck in a circadian mismatch → leading to-
  • Dysregulated hormones
  • Poor skin healing at night
  • More breakouts, especially jawline/cystic types
What to Do?
  1. Get 10–20 minutes of direct sunlight within 30 minutes of waking (no sunglasses or glass).
  2. Avoid bright screens 2 hours before bed or use blue-blocking glasses.
  3. Wake and sleep at consistent times, even on weekends.
  4. Sleep 7–9 hours to allow for skin repair and hormonal balance.
It's a fact Jack (or Jill 😍) -
  • Sunlight → resets circadian rhythm → balances hormones and reduces inflammation.
  • Disrupted rhythms → cortisol spikes, insulin resistance, poor skin healing → more acne.
  • The earlier you get sunlight, the better your skin clock works.
Struggling with stubborn breakouts despite trying all the right products? Start with your light habits.
Track your morning light exposure for the next 3 days and
Note any changes in mood, energy, sleep or skin. Write them down on a scale of 1-10.
Mood
Energy
Sleep
Skin
Who is open for the Challenge?🌅
Me, I'm willing.
No way, what if I change? Get happier, more energy, sleep better and have even better skin?
My Mood Energy Sleep Skin could not be better in this Life
8 votes
5
7 comments
Rheece Hartte
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Sunlight - Really? -Stress, Blood sugar, Sleep and Immune System?
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