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Get enough sleep, and try to keep a regular sleep schedule. Regular exercise and avoiding caffeine in the evening also may help.

See a doctor immediately if:

• Chest pain, a racing heart, or shortness of breath
• Abnormal bleeding
• Feeling faint
• Severe pain

See a doctor if:

• Somnolence is lasting or affects work or relationships.
• Symptoms include nighttime snoring or pauses in breathing.
• Symptoms include sadness.
• It's hard to complete daily tasks.