I would just continue the day since I would have nothing to lose and it literally wouldn't matter either way.
Though, knowing me, I'd probably waste it eating cheesecake all day. That "everything goes back to the way it was" part is good so I won't gain any weight :p
...Something I just thought of is whether the day is subtracted from your lifetime or not. If the day had the even tiniest cost, I would terminate it immediately.







