85% humidity
When I was working well in summer in London, while all special people 'went on holiday'
I always got out to a crowded park for lunch
The climate was thick but it'd be silly to moan - memories of sweat in tie & cufflinks - especially in the tube in morning and evening. Plenty of motivation.
My priority was to keep working but
avoiding people in the office.
I've always taken long toilet breaks to relax alone and always being at my desk when others go out, and precise timing to be sure I was away before they came back. My etiquette. The lowest form would be to scoot to the bathroom when jovial jokes begin. Staying away from elevators - staircase to be by myself. This always showed my failure