I’ve got a confession to make. I really - and I mean really -  don’t deal well with hangovers. Even if I just go out for a couple of glasses of wine with the girls, I pretty much have to wave the next day goodbye. The 3 am migraine kicks in like clockwork. At 8 am nausea comes knocking, putting me straight off my breakfast. By 2 pm, my Saturday is history: full-force sluggishness kicks in, and all I can bring myself to do is sit in front of the TV and, with a cup of green tea in hand, crush an entire season of Friends.