What are the characteristic differences between slow-twitch and fast-twitch muscle fibers as well as the ATP, LA and oxidative energy systems?
Brian Danley, CFT
"Motivation is what gets you started. Habit is what keeps you going."
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I'm a personal trainer who loves to help others fulfill their health and fitness goals. I consider myself a bodybuilder in that I live the lifestyle of eating healthy food, working out regularly, and sculpting my body.