Hi Nat,
They all went to NZ (Queenstown actually). Chris was ill so he stayed in bed. They climbed a mountain with 7 or 8 different check points, one for each week they were in the house. At each checkpoint they added a bag to the their backpack that weighed as much as they lost in that week. By the time they reached the top of the mountain they were carrying the total amount they'd lost so far.
Oh yeah, they also learnt a Haka!
My new book:
Winners Do What Losers Don't