Trainer's Favourite Isometric Exercises to Build Strength
These Are the 14 Low-Impact Isometric Exercises Trainers Recommend to Build Strength
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Malek also likes superman holds because they activate the posterior chain muscles (muscle on the backside of your body), which include the glutes and hamstrings among other muscles along the spine. "These muscles are imperative for stability and help protect the back, so it's great to activate them even before lifting," she said.