It’s a weight room staple and one of the easiest ways to measure improvements in the gym.
“If someone has a lot of weightlifting experience, I suggest they try to measure directly, meaning to try to find the amount of weight needed to perform exactly one repetition,” McArdle says. But, he cautions that weightlifting novices should not try to lift as much as they can in just one rep.
Instead, they can use the Brzycki equation, which converts a multi-rep set into an estimate of what your one-rep max should be. ExRx provides a useful calculator to use the equation here.
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