@madscientistofmuscle: This nervous system hack can get you 1-2 more solid reps at the end of your dumbbell curl sets. This quick trick will get you more reps in that "money" part of the set were the growth stimulus happens (and yes, it IS supported by science...see below). Next time you do alternating dumbbell curls, when you hit the end of a set where you'd normally end it, keep going. At the sticking point of the curl, do a partial range kickback. This contralateral antagonist activation will get you a quick increase in neural drive to the bicep that you're working and SHOULD get you past the sticking point. This got me two extra reps on my set. If you try it, post your results in the comments! I'd love to hear how it works for you. ------------------ The Science... When you strongly contract the triceps on one side while curling with the opposite biceps, neural interactions between the two sides of the motor system may reduce interhemispheric inhibition and increase neural drive to the working muscle. This is related to broader phenomena such as contralateral neural facilitation and concurrent activation potentiation. Here's a good reference, if you're interested in learning about the concept. J Neurophysiology. 2014 Jan;111(2):405-14. doi: 10.1152/jn.00322.2013. Epub 2013 Oct 23. Modulation of transcallosal inhibition by bilateral activation of agonist and antagonist proximal arm muscles ------------------- Bottom line, it works... you don't necessarily need to know HOW it works in order for it to work. --------------- Want bigger arms? Try this free 3 week specialization program.... Link in bio #dumbbellcurls #bicepcurls #bicepexercise #bigarms #nicknilsson

Nick Nilsson

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Tuesday 01 September 2026 22:48:20 GMT