Had a few in my time off bikes, however the worst was on Wednesday evening in the shower/wet room.slipped cracked my head on walls , crawled out and lay down couldn't walk , all day Thursday had to slide down stairs on arse and couldn't do anything without stumbling and being constantly dizzy . Long sleep last night bit dodgy this morning but fine now ish was a proper squeaky bum time any one else had this ? Thing is it was worse than any bike off I've had !!!