
Lifehacker
shared a link post in group #Lifehacker

lifehacker.com
Are Sit-Ups Actually Bad for Your Back?
Sit-up tests suck, yes. But sit-ups themselves are fine.

Lifehacker

shared a link post in group #Lifehacker

lifehacker.com
Are Sit-Ups Actually Bad for Your Back?
Sit-up tests suck, yes. But sit-ups themselves are fine.
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