Does every set need to end in failure?
A review found no clear hypertrophy advantage for momentary muscular failure over non-failure training. Study definitions and stopping points matter.



Refalo et al. · systematic review and meta-analysis. The sample is a simplified educational interpretation, not an individual training prescription.
More days, more muscle?
Compare weekly training volume before attributing a change in muscle growth to the number of training days.



Schoenfeld, Grgic & Krieger · 2019 review. The chart is conceptual, not study data. The finding concerns muscle growth and should not be assumed for every performance outcome.