1. Causes of Fatigue Slideshow Pictures
2. Take the Sleep Quiz!
3. Foods That Help or Harm Your Sleep Slideshow Pictures

Author:

Michael B. Russo, MD

Coauthor:

Shehnaz Shaikh, MD

Editor:

William C. Shiel Jr., MD, FACP, FACR

William C. Shiel Jr., MD, FACP, FACR

Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

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sleep understanding the basics, stages of sleep, stage I, stage II, stage III, stage IV, delta waves, delta activity, nonrapid eye movement, NREM, rapid eye movement, REM, light sleep, deep sleep, circadian rhythms, melatonin, biological clock, hypothalamus, neurons, nerve cells, brain activity during sleep, pineal gland, prolactin, testosterone, growth hormone, sleep rhythm, neurotransmitters, sleep deprivation, lack of sleep, sleep cycles, sleep time, amount of sleep needed, jet lag, insomnia, sleep hygiene, sleepwalking

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