I have never suffered badly with jetlag (or been badly ‘lagged’ as my brother used to say). In all my travels I think I’ve fallen asleep in my dinner once or twice around the world, but I have always got at least as far as dinner before collapsing with exhaustion.  The trip from the UK to Australia is something else though. It really is the other side of the world you are travelling to. Calculating the time ‘over there’ (whichever way you’re working it out) is confusing enough; trying to get your body to adjust is truly difficult. I have long been teased about my ability to fall asleep almost…