Bicycle crunch: Twisting at high speeds is a recipe for herniated discs and muscle spasms.
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Lat pull-down (behind the head): If something in your shoulder doesn't feel right, stop and find another exercise.
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Kettlebell swing: If performed incorrectly, the repetitive swinging motion could result in rotator cuff injury.
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Bent-over row: Hinging from the waist causes your shoulders to roll forward, which can contribute to poor posture.
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Romanian dead lift: Most commonly, a person will fall into hyperextension through the low back while lowering and lifting weight, which could result in lumbar disc injury or muscular spasm.
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Overhead squat: The actual overhead motion adds strain to shoulder, cervical, thoracic and lumbar regions.
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Backward medicine ball rotation toss (against a wall): It's never a good idea to forcefully rotate your spine backward.
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Seated leg extension: It places undue stress across your knee joint, affecting the delicate cartilage under the patella.
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Pull-up: Done improperly, pull-ups can lead to shoulder issues.
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Preacher curl: There is no stabilization of your core or lats because your shoulder blades are out of place and you are in a forward posture.