Late Feb–Apr, Korea suddenly warms — 80%+ experience chungongjeung (spring fatigue). Daily sleepy, lethargic, worse after lunch. Normal circadian adaptation but — if prolonged suspect other causes.
Why Sleepy in Spring?
- ↑ daylight — melatonin secretion time changes → circadian rhythm readjusting
- ↑ temperature — vasodilation → ↓ BP → sleepiness
- ↑ activity — more outdoor than winter → energy consumption
- allergy season — pollen → antihistamine → sleepiness
- fine dust/yellow dust — respiratory burden
- ↓ vitamin D — winter deficiency accumulated
Spring Fatigue Symptoms
- Daily sleepiness (especially afternoon)
- Hard to wake morning
- Lethargy/↓ concentration
- Appetite changes
- Lasts 2–4 weeks (normal)
Recovery — 8 Stages
1) Morning Sunlight 30 min
30 min after waking — strong circadian rhythm reset. Most effective.
2) Consistent Sleep Time
30–60 min earlier than winter sleep/wake (match daylight).
3) Protein Breakfast
Eggs/yogurt/nuts — ↓ afternoon sleepiness.
4) 30 min Daily Exercise
Spring walk/cycle — sunlight + exercise combo.
5) Caffeine — Morning Only
No afternoon — more sensitive in spring.
6) Vitamins/Minerals
Vitamin D (winter deficiency), B group, magnesium, iron.
7) Short Nap — 20 min
1–3 PM short. No 30+ min.
8) Allergy Management
Korean spring pollen — antihistamine (less drowsy type), mask.
"Not Spring Fatigue" Signs — Doctor
- 4+ weeks fatigue persists
- ↓/↑ weight
- Severe depression/↓↓ concentration
- Unexplained fatigue (despite sunlight/exercise/sleep)
- Other symptoms (fever, pain, night sweats)
Suspect diagnoses: thyroid (TSH), anemia (CBC), depression, chronic fatigue syndrome, sleep apnea.
Start Today
(1) 30-min morning sunlight walk, (2) protein breakfast, (3) 30 min earlier sleep, (4) evaluate after 4 weeks, (5) family medicine if persists.
Spring fatigue is normal spring adaptation. Natural recovery in 2–4 weeks. Accelerate — sunlight/exercise/nutrition.
