I keep getting recommended the use of creatine as I stay consistent at working out. But apart from increasing protein, I don’t fully understand how creatine functions in the body and if it’s necessary in lifting weights.
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Your car (muscles) needs fuel (energy in the form of ATP) to run. If your car runs out of fuel, it has to stop for gas. Creatine is stored in your muscles and is used to make more energy, so in our metaphor, it’s like bringing a jerrycan of gasoline with you so you don’t have to stop as quickly or as often.
(ELI5 Caveat: This is a gross oversimplification and ignores other benefits that studies suggest Creatine has with regards to weightlifting)
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