Two Experiments in Exercise Minimalism
I've blogged about this idea before - working hard, but not doing more than you need to get the results you want. It's the idea of not doing more than you need to for your results. I picked it up originally from a judo book - the idea was basically to do the minimal amount necessary to get the maximum possible result.
It's a good idea, and his blog post makes it clear just how little that can be. Just because 3 sets is great doesn't mean 6 sets is better. But you still need to do the work - if you need 6 sets and do only 3, you're not putting in the work necessary. You can't confuse "minimum necessary" with "minimum possible." To paraphrase the Simpsons episode about Flanders' parents, you can't do "absolutely nothing" and expect it to work.