Jade

and let us never forget the REST part of the equation. If you do anything other than lifting weights (cardio, recreational sports, etc) that means you're doubling up on workouts some days or using non-training days to do that stuff. where is the actual REST fitting in?

training 5 days/week as opposed to 4 IS probably better for some people if they have short gym sessions and/or just fucking love to go and train. But from a strictly "do I need to do this to make progress?" perspective, we can often accomplish a LOT with 4 training days.

Making the transition from 2 training days to 3 training days per week has the ability to yield pretty significant progress. 3 to 4? Also probably pretty great for advanced trainees. once we get into 4 to 5 days is where we really want to look at "is this necessary?"