have to wholey agree on the portion sizes there gren.
everyone in the family thinks because of my size (comparatively to them I am bigger) that I should eat way more.
go around somewhere for dinner put a nice amount on the plate and they look in amazement why there isn't more, even asking why there isn't more or to say to go back for more. same with at home.
its all in moderation though.
there is a time to have that footlong from subway, so long as you know the energy is massive and you can balance it out.
same with having say a big bowl of pasta for dinner, of which I normally aim for the night before competing on the bike.
I wouldn't necessarily say its down to education on whats good or what isn't, although it does contribute
people know that x or y is bad, they just get lazy *puts hand up to say I am one of these people* and just go the easy option.
at the same time its great to get into a healthy routine and attempt to stick to it.
if you can make lunches and snacks for your day beforehand then awesome.
basically its very easy to go over the top and become obese
having personally been there after sitting behind a desk at school for years and doing no real exercise its a very easy trap to fall into.
then getting into a really good routine, cutting out a lot of sugar, doing a physically demanding job and being involved in a sport you enjoy can certainly turn it all around.
but as usual it comes down to everything in moderation.