Load + effort builds muscle. The tool is up to you.

Push-ups at matched effort built similar muscle and strength to the bench press. Progress bodyweight by leverage, the way lifting progresses by plates.
P Evidence: promising. Good studies, but small or few. Use it and keep checking.
Kikuchi & Nakazato 2017 · Calatayud et al. 2015 · Kotarsky et al. 2018 (small trials). The principle is load plus effort, not the tool.
Not medical, legal or financial advice.
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