^^^^I believe you may be referring to Bernoulli's principle.
https://en.wikipedia.org/wiki/Bernoulli's_principle
I’m 50, have over 10yrs of 2-3 shots per week (continuous) 23 gx 1” or even 22g x 1.5” in delts, glutes and quads with no scar tissue. I think some folks underestimate how tough our bodies are. If you don’t rotate sites and favored 1 way too much it might get “gristle-y” when you insert the needle there.You all are insane using 23 gauge for TRT. You have to have so much scar tissue.
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