system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is it important to do a pushup "correctly"? What is the health benefit and how did a specific form become correct?
gpt
If you do them without proper form(mostly a bent back) you are using the wrong muscles, first of all. You are using your back to support you. A pushup should only require the strength of the arm and chest muscles.

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A straight back and squared shoulders ensure that these muscles bear most of the weight.