- Heart pumps faster to deliver more oxygen-rich blood
- Pulse over 100 beats per minute at rest
- May feel like palpitations or fluttering in the chest
Especially concerning if combined with dizziness or chest pressure.
4. Fatigue and Weakness
- Cells can’t produce energy efficiently without oxygen
- You feel drained even after rest
- Daily tasks become harder
Brain fog often accompanies this — lack of oxygen affects mental clarity.
5. Confusion, Dizziness, or Headaches
- Brain is highly sensitive to oxygen changes
- Confusion, memory lapses, or poor concentration
- Morning headaches are common in people with sleep apnea
In severe cases: Loss of consciousness or seizures
6. Cyanosis – Blue or Gray Tint to Skin
Continued On Next Page
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