The Week After Kilimanjaro

Days 0–1: DOMS Onset and Altitude Headache

The adrenaline of summit morning wears off by midday. The fastest you have ever descended 15km of rocky Mweka Route trail is now sitting in your quadriceps as delayed onset muscle soreness (DOMS) — and it is just getting started. The headache you carried from Kibo rim may persist for the first few hours after descent as your body re-oxygenates at lower altitude. Most climbers feel surprisingly capable on the morning of day 1, then hit a wall by mid-afternoon. Sleep debt from the summit push compounds with muscle inflammation. Rest is the only prescription.

Days 2–3: Peak Fatigue and Swelling

DOMS peaks around 48–72 hours after the descent. Walking downstairs is genuinely painful for most climbers. Your hands and feet may look slightly swollen — this is peripheral oedema from the plasma volume shifts at altitude, and it resolves on its own within a few days. Appetite returns first, then sleep patterns slowly normalise. Reverse altitude sickness is in full effect: you may feel slightly breathless at rest, have vivid dreams, and notice a general foggy disorientation that peaks on day 2 or 3.

This is also when mood can dip — the post-adventure blues is a documented phenomenon. The structure of the climb is gone. The daily rhythm of walk-eat-sleep is replaced by flat Arusha days waiting for a flight. This is normal and temporary.

Days 4–7: Jet Lag-Like Fatigue and Altitude Cough

You feel like you are perpetually jet-lagged even though you have not crossed a timezone. This is reverse altitude effect — your body is still calibrated for thin air even though you are at 890m in Moshi. Expect persistent low-level fatigue, difficulty sleeping deeply, and occasional vivid dreams. A mild dry cough is common at this stage: the bronchial irritation from breathing cold, dry air above 4,000m for multiple days does not resolve immediately. It should be dry and non-productive. A productive cough that persists beyond two weeks warrants a medical check.

Mood letdown typically surfaces here too — the summit high has fully worn off, you are physically uncomfortable, and the logistics of travel home feel mundane after the intensity of the climb. Light walking is beneficial now, but no structured exercise.

Weeks 2–3: Full Energy Return

Most climbers feel substantially recovered by the end of week 2. DOMS is fully resolved. Sleep patterns are back to normal. The altitude cough — if it persisted — is fading. You are cleared for normal exercise from approximately day 10, with full training load resumeable by week 3. Toenails that turned black during the climb will take 3–6 months to grow out fully. This is normal. Do not pull them off.

Some climbers feel fully recovered by day 14. Those who spent longer above 4,500m — on Northern Circuit or extended Machame routes — may take until day 21. Both timelines are normal.

After One Month: Red Flags to Watch

By one month post-climb, all symptoms should be steadily improving. See a doctor if you experience:

• !Persistent shortness of breath at rest beyond 3 weeks after descent
• !Cough that produces coloured sputum after returning home
• !Leg swelling, redness, or warmth in one calf — seek immediate care (possible DVT)
• !Severe headaches beyond 48 hours at altitude below 2,000m
• !Chest pain or palpitations at any point post-climb