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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Kristina Jennings, CSCS, CFSC, and coach at Future, told POPSUGAR that planks help people build a solid foundation for core strength. "Without core strength, we wind up compensating and using our spine and back to control exercises," she said. "This is not ideal because it can cause stress to the back, resulting in injury."