I'm the same age (nearly 40) and height and weight as you ,average days intake is :-
4am
slice of bread with jam
8am
saus + egg butty
1pm
ham + egg salad
6pm
proper dinner i.e. lasagne/shepherds pie and a pudding.
All spaced with drinks , mainly coffee throughout the day not much alchohol though, even though it's always in the house we just don't really drink it.
I have to admit that I don't eat small portions and look quite big but only start to have problems if my weight goes over 15.5st but anything under 15 feels ok to me .
And I don't feel the cold.