5. Morning Headaches That Improve As The Day Progresses

These headaches typically occur because your brain receives less oxygen during sleep. They often appear right upon waking and improve within a few hours. They tend to be dull, spread across both sides of the head, and feel like pressure. If you’ve tried everything from new pillows to pain relievers but still wake up with headaches, look to your nighttime breathing as the real culprit. Medical research shows these headaches often resolve completely with proper sleep apnea treatment.