For me, it is when I am enjoying the SECOND cup / glass of something. If I have time for a coffee cup refill in the morning ... when I get to the second glass of wine on a Friday evening ... when there is a second part to a meal because we have made time for a starter or a rare dessert.
And when I am in my pjs, early in the evening / after 8 in the morning - simple luxuries!
What makes you know you are in the zone?
Baby Reindeer - anyone watched it?
To think that London, or anywhere else for that matter, does not belong to any one demographic