It IS ... sort of ... a human condition
[Chalky] *slightly abashed* thank you very much. Although Rosie's last clue was the key pointer I'm afraid.
[BM] I agree it was an extremely good one.
[Rosie] Yes, I still dwell nary 10-15 mins down the road from you (if memory serves correctly). I'm working in Purley now having left the hallowed halls in the Fens.
OK there seem to be some missing answers, if I've read it right:
Is it an action? [Bob]
Is it dieting? [Darren]
Is it unhappiness? [Chalky]
Is it self-consciousness? [LotUS]
Is it something to do with physical appearance? [Darren]
Phew!
Aha ... have just previewed and seen your posting - it just struck me - a combination of lateral thinking [replacing emotion with motion] and your environment clue. I WAS going to ask if the 'condition' was temporary, but then thought b*ll*cks to all that namby-pambying around so just went for it ...