Blade has a new, really good article at http://borgefagerli.com/are-you-doing-too-much-volume/ I have found this to be true in my own training. Some excerpts below, would be nice to hear others comment. It only takes 1-2 hard sets to get 80-85% of the training effect, and doubling-tripling that only provides marginal benefits with a large increase in potential negatives. Even Schoenfeld’s meta-analysis showed that 1-4 weekly sets provided 5.4% gains, 5-9 weekly sets, 6.6% gains, 10+ sets provided 9.8%. When stratified into less than 9 and more than 9 weekly sets, the difference was 5.8% and 8.2%, respectively. when we get to a certain point it will be hard to gain even 1-2lbs/0.5-1kg of muscle mass per YEAR Most muscle groups or exercises get 1-2 maybe 3 sets per workout and 2-4 workouts per muscle group per week.