Being in the lab helps me focus on my thinking. I also discuss my current thinking and problems with my peers for critique, and I can do the same for them. I'm more conditioned to do research, and my mind wanders less in the lab.

However, I do agree that having free time and being away from the lab is important to get a fresh view of things.

He probably means planning meetings.

Never understood what the purpose is to fill half the day with meetings. Beside the illusion of productivity.