I almost like Boxing Day better than Christmas day - it is my day.  All the hard work is done, dinner is a re-run of today with just the veggies to cook freshly, and I can totally relax.  There are still a few presents left and if we don't get to them today then it will add to the fun tomorrow.  
Couldn't bear to be heading out shopping or scrumming down in the sales - it is still Christmas in our house.
Whatever you are doing - enjoy yourselves
Dawn