It depends on the resource you're using, and how it is designed to be employed. I can only really speak on behalf of how Drawabox is intended to be used - which specifically requires us to be as focused as we are able so that as we practice, we are applying the concepts and strategies introduced throughout the course as intentionally as possible, so that those things are able to sink into our subconscious and effectively train our "autopilot". The goal here is to develop your instincts so that when you're drawing outside of the course, they can reliably take care of a lot of the heavy lifting on the technical side of things, so you can focus your cognitive resources on the more creative matters of design, composition, narrative, etc. that actually make our work interesting. If your brain is occupied with figuring out how every mark should be drawn in order to be correct with perspective, gesture, structure, etc. then there isn't much left to think about what it is you're drawing - but the only way we reach that kind of outcome is by really drilling those concepts from a position of conscious awareness, rather than relying on our autopilot to train itself - which never turns out well.

But that is all within the context of this course's goals, and other courses may have entirely different goals - for example, some courses attempt to intentionally get students to loosen up and think less. So a single answer can't really be given to cover all cases.