Every day decisions that you make about food and physical activity are influenced by the world around you, often without your awareness. 

The size and colour of your plate, the lighting in the room and how food is presented all influence how much you eat. The location of foods in the supermarket - aisle and shelf placement - and whether you shop for fruit and vegetables first or last changes what you buy. ​How much you use of any product (not just food) depends on the size of the packaging and where you store it. How much exercise you do changes according to the people around you, whether you put your sports gear out in advance and the music you listen to. 

By understanding how your surroundings affect your choices, you can create an environment that will support the changes you want to make.