My response *** number 10 has been debated for a long time, your thumb is the strongest digit on your hand, with a very strong muscle connecting it to the Ulna, this provides a lot of strength to grip onto the bar. Would you rather use less muscles? Or would you rather use more muscles, create more force, expend more energy, and do more within your workout?
Number 7 is just a common rule within dips and push ups, why would you ever want your elbows to flare out? You produce more force towards the center of
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