For people who already regularly lift weights, doing more sets per week does not reliably lead to more muscle growth than doing fewer sets.

What we’ve found so far suggests that for people who already lift weights regularly, doing more sets per week doesn’t reliably lead to more muscle growth than doing fewer sets [1]. Our analysis of the available evidence includes one assertion that directly addresses this question, and it supports the idea that increasing volume beyond a certain point doesn’t consistently result in greater muscle gains in trained individuals. We looked closely at what this means in practice. For someone who’s been lifting for months or years, their body may have adapted to a certain level of training stress. Adding more sets — say, going from 3 sets to 6 sets per muscle group per week — doesn’t automatically mean more muscle will grow. The evidence we’ve reviewed doesn’t show a clear pattern where higher volume leads to better results in this group. It’s important to note that this doesn’t mean more sets are useless, or that they never help. It just means, based on what we’ve seen so far, the relationship isn’t reliable. Some people might still benefit from higher volume, but the data doesn’t show it as a consistent trend across trained individuals. We don’t know yet what the ideal number of sets is for muscle growth in this population, or whether factors like recovery, diet, or training history change how volume affects results. The evidence we’ve reviewed is limited to just one assertion, so our understanding is still early. If you’re already training regularly, adding more sets might not be the best way to keep making progress. Instead, focusing on consistency, intensity, and recovery could matter more than simply doing more sets.