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That being said, current research supports evaluating the following nutrients at a minimum: 1
Its defining structural feature is a lactam bridge, an internal bond that closes the amino acid chain into a ring, making it more compact and enzyme-resistant than linear peptides
Caffeine is a well-known stimulant that increases alertness and energy, making it ideal for pre-workout use
2007 Sep 1;59(1):24-34
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