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American Academy of Sleep Medicine: "Sleep and Caffeine."
American Migraine Foundation: "Caffeine and Migraine."
Consumer Reports: "Are You Getting Too Much Caffeine?"
Current Medical Chemistry: "Protective effects of the caffeine against neurodegenerative diseases."
Frontiers in Nutrition: "The Impact of Coffee and Caffeine on Multiple Sclerosis Compared to Other Neurodegenerative Diseases."
Harvard Health Publications: "Menopause-related hot flashes and night sweats can last for years," "The latest scoop on the health benefits of coffee."
Harvard Medical School Division of Sleep Medicine: "Twelve Simple Tips to Improve Your Sleep."
Institute For Scientific Information On Coffee: "Sports Performance," "Fluid Balance," Caffeine."
Journal of Clinical Sleep Medicine: "Caffeine Effects on Sleep Taken 0, 3, or 6 Hours before Going to Bed."
Journal of Science and Medicine in Sport: "Caffeine and diuresis during rest and exercise: A meta-analysis."
Journal of Strength And Conditioning Research: "Efficacy of acute caffeine ingestion for short-term high-intensity exercise performance: a systematic review."
Journal of the International Society of Sports Nutrition: "International society of sports nutrition position stand: caffeine and performance."
Mayo Clinic: "Is there a link between caffeine consumption and menopause symptoms?" "Caffeine: How does it affect blood pressure?" "Expert Answers: I've been seeing ads that say caffeinated drinks hydrate you as well as water does. Is this true?" "Curbing your caffeine habit."
Michigan State University Extension: "Health benefits and risks associated with caffeine."
National Sleep Foundation: "Caffeine and Sleep."
Nemours Foundation: "Caffeine."
University of Michigan Health Service: "Caffeine."
FDA: "Spilling the Beans: How Much Caffeine is Too Much?"