The 5 Levels of Fatigue is a system developed by (me) food scientist and biochemist Danielle Robertson, author of Are You a Monster or a Rock Star-A Guide to Energy Drinks. This system matches a Level of Fatigue with chemical properties (like carbonation, % fruit juice etc) of the corresponding beverage. Caffeine is not always the answer either! Level 1 is dehydration so water is the best option.


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