**Common Dangerous Core Exercises**
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> *Every situp causes **730 pounds (3300 N)** of spinal compression forces.*

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Research confirms ***no single core exercise challenges all of the abdominal musculature while not harming the back***. Multiple exercises are required to strengthen the core and related muscles. 

***Unfortunately there are many inappropriate exercises unsafe for most people***.

These exercises does not help relieve back pain, but instead **increases low-back damage** because of ***high compressive forces placed on the lower spine***:

> **Leg raises:**   Lying flat on the floor, raising your while straight. These cause **even higher spine compression than sit-ups.**

[Rehabilitation of the Spine: A Practitioner's Manual][1]


  [1]: https://books.google.com/books?id=mLMLFOlua3YC&pg=PA105&lpg=PA105&dq=These%20cause%20even%20higher%20spine%20compression%20than%20sit-ups&source=bl&ots=txnAzM8zZG&sig=mP0xlcBlOHxqOfecNl6sIOrX7Ec&hl=en&sa=X&ved=0ahUKEwiw5Zzmz97UAhUEcD4KHX8OAV8Q6AEITjAG