Jan
09
2012

Ab Exercises – Why Sit Ups & Crunches are Bad for You

Sit-up is the most popular AND yet, the worst ab exercise. Most people don’t know that sit-up is not a true ab exercise. When performing a sit-up, your main trunk flexor, the iliopsoas muscle, often does the majority of the work while the abs are not fully recruited.The iliopsoas muscles originates on the lower back [...]

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