Fatigue (Feeling Weak and Very Tired)
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Why do I feel so tired?
Chemotherapy can make you tired. So can other things like anemia, which is a low red blood cell count. Being depressed or in pain, taking certain medicines, or having trouble sleeping can also make you feel tired.
Make a plan to feel less tired.
Do less. Let others help you.
- Do activities that are most important first.
- Ask others for help.
- Take time off from your job, or work fewer hours.

Tell your doctor or nurse if:
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Eat and drink well.
- Make healthy foods when you feel well. Freeze them to eat later.
- Eat 5 or 6 small meals during the day to keep up your strength, instead of 3 big meals.
- Most people need to drink at least 8 cups of water a day. Keep water with you and take small sips during the day.
Be as active as you can.
- Try to exercise every day. Even 15 to 30 minutes a day can help give you energy.
- Take a walk or ride an exercise bike every day.
- Ask your doctor or nurse about other exercises that can help. Stretching, yoga, or Tai Chi help some people.
Take time to rest.
- Listen to your body. Rest when you feel tired.
- Try to take short naps that are 1 hour or less, during the day.
- Make a bedtime routine. Bathing or listening to music before you go to sleep may help you relax.
- Sleep at least 8 hours every night.
Questions to ask your doctor or nurse:
- What problems should I call you about?
- What medicine or treatments can help me?
- What foods and drinks are best for me?
- How much liquid should I drink each day?
- What exercises can help me feel better?
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National Cancer Institute Cancer Information Service
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