I've been reading lots of the tips on food intake during the last couple of days and feel very confused as to why I'm overweight at all. The articles suggest swapping a buttery muffin for a current bun yet I would never eat either as I have never smacked between meals. I don't like sweets so that isn't the culprit. It talks about using low fat marg instead of butter but I've always used Flora and sometimes I have nothing on my bread if for example I am having beans on toast or a jacket. It says to use semi-skimmed milk rather than full fat yet I've always used completely skimmed and never finish any milk at the bottom of my cereal bowl. I already eat healthy cereals such as museli as I'm not a fan of sugar.My portion sizes I believe are fairly small too. I just don't understand why I can't loose weight. I am in a fairly active job working in school which involves running up and down stairs all day. I walk for half an hour each day and a couple of hours on Saturday and Sunday. Yesterday I walked ffir 7 miles which took me 2 hours, did some weights, sit ups etc. What mire can I do. Sadly I can't afford the gym. Any advice?