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Are You Feeling Too Drained to Finish This Article?
If you can stay awake...
Close your eyes and say ommm. Recent research has found that meditation may increase gray matter in parts of the brain associated with both sense of self and empathy. The Mayo Clinic's meditation app offers a five-minute program.

If you can't...
Rather than drag your weary bones through the rest of the day, follow in the footsteps of notable nappers like Thomas Edison, Leonardo da Vinci, and Eleanor Roosevelt. Daytime dozing can give you instant energy and enhance cognitive performance.