Hi Will,
How did you go over the xmas/NY period?
I'm halfway through the 2nd slide in my first box of 15's. I can't say I've seen any drastic side effects. I'm pretty sure it 'allows' me to stay up later without the feeling of tiredness, but that doesn't stop me being able to get to sleep at normal times. If anything the benefit is I'm waking up easier and is not so much of a struggle as it used to be.
In terms of diet, certainly the appetite suppression means I have an 'edge' in terms of meal choices. I should explain a bit more - I work away a lot on different sites etc where most (all) meals are buffets. Previously I'd usually be hungry for starters and just go 'a bit of everything'. Since I'm not hanging out for my next meal it is easier to pick the healthier options.
I'm a bit the opposite, I haven't noticed any body-changes. But scales say 5Kg in Dec (technically -7 then +3 during 24th-30th and -1 30th till now).
I do need to put more of a focus on the exercise peice though!