Dr. Lawrence L. Spriet is a professor in the department of human health and nutritional sciences at the University of Guelph in Guelph, Ontario, Canada. Dr Spriet received his bachelor's degree in kinesiology at the University of Waterloo, his master's degree in exercise physiology from York University in Toronto, and his doctoral degree in medical sciences from McMaster University. He has studied the regulation of fat and carbohydrate metabolism in skeletal muscle metabolism during exercise and has also worked on the effect of various nutritional and pharmacological interventions on athletic performance. His research output appears in numerous scientific journals, including Journal of Physiology, American Journal of Physiology, and Journal of Applied Physiology. Dr. Spriet is a member of the editorial board for the International Journal of Sports Medicine and the U.S.-based Sports Medicine Review Board of the Gatorade Sports Science Institute. He is also the chair of the Canadian Gatorade Sports Science Institute. Lawrence is a committed caffeine user. He first sampled the benefits of coffee use while completing his MSc degree many years ago. Coffee now starts his every day, except when he's volunteering for a caffeine withdrawal study! Two to three additional cups of coffee punctuate the day, and just having the cup on the desk is a positive influence on the many tasks that need to be done.