Brett Williams, NASM

Brett Williams, a fitness editor at Men's Health, is a NASM-CPT certified trainer and former pro football player and tech reporter who splits his workout time between strength and conditioning training, martial arts, and running. You can find his work elsewhere at Mashable, Thrillist, and other outlets.
 
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Try these spins on the basic exercise to target different muscles, ratchet up the difficulty, and crush monotony.
 
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The actor worked with celebrity trainer Gunnar Peterson to prep for Lando Calrissian's return.
 
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His personal trainer shows us how he got in superhero shape for the sequel.
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