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Is "crunches are bad" finally a meme? When is spinal

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Cite your sources, preferably academic papers only to keep out the broscience and bullshit. Thanks in advance!

https://www.researchgate.net/publication/232156729_To_Crunch_or_Not_to_Crunch_An_Evidence-Based_Examination_of_Spinal_Flexion_Exercises_Their_Potential_Risks_and_Their_Applicability_to_Program_Design

pic unrelated, source is jessicababyfat (iirc)
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>Cite your sources, preferably academic papers only, to keep out the broscience and bullshit.
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>>42247393
never hear anyone say crunches are bad
>>
>>42247461
heard
>>
>>42247393
loaded spinal flexion and rotation is bad

spine is meant to bend back and forth but doesnt handle shear well
>>
>>42247452
I've found some of the best papers being referenced here, among all the bullshit. idk, I have hope for /fit/ that we aren't all just /pol/fags and uneducated gymcels
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