Bikes are sometimes used as advertising boards. Fine if it's outside a shop or on otherwise unused space (such as this, for Bodmin Jail, in Bodmin). Even better if it's actually being ridden around.
Though I'm not entirely happy about unrideable ones taking up a genuine parking space like this one (right), in Weybridge.
Anyway, who needs yoga? Locking up any normal bike properly - manoeuvring your half-ton U-lock round the back wheel, frame and rack, and then snaking the heavy-duty cable all the way through every gap in the bike, the front wheel, and the rack again - surely requires contortion enough.