I love my old Nokia as well - the only phone I have and it too keeps a charge for a good week with pretty heavy calling and its primitive texting. I've had it ,for years and it looks it, but I do not want to give it up.

Don't laugh - it has been very good to me. I really only needed some dumbbells and a pull up bar and I was able to do every exercise at home - the exercises are varied and sort of fun (especially the plyometrics.)

In general I would prefer to exercise a bit harder rather than giving up dark beers or the occasional pint of Ben & Jerry's.

One thought - drink water, coffee or tea. Other soft drinks are capable of providing a lot of empty calories.