Deep work – the time block for doing difficult or ‘immersed’ work should be scheduled when you’re feeling most productive. If, like me, that’s in the mornings, avoid scheduling meetings before lunch.
See productivity, focus
https://www.ignite80.com/articles/2016/9/28/when-to-schedule-your-most-important-work
‘Fatigue, it’s worth noting, is not all bad. In fact, the findings of a 2011 study suggest that when our minds are tired, we are more distractible and less adept at filtering out seemingly irrelevant ideas. The free association that ensues makes “off-peak” hours an ideal time for finding novel solutions.’
Which suggests that meetings with other people can be good when we’d otherwise not be great at doing difficult work.
Being slightly tired (thus less adept at filtering out “irrelevant ideas”) could potentially be good for creating new directions and feeding in to creative meetings.
For me this means scheduling them in the afternoon.