Hi Jac- Your life sounds lovely - I'm officially jealous
I would suggest that you could possibly track both your sleep problems and some of your muscle pain to the coke zero. Could you try a 30 day caffeine free, sweetener free trial? Even if that meant consuming more sugar than usual?
The other thing is that you could consider putting some magnesium on your skin in the evenings - no worries of upsetting your GI tract, but still the magnesium you need for deep sleep.
Good luck! I never had any real fear of losing the weight - but I have a weird fear of gaining it back now! I guess our minds are all effed up in our own special ways
