experts say snacking is an important way to control hunger ; and while we would like to think we reach for something healthy like carrot sticks , raisins or a handful of almonds , more often than not it 's salty crisps , sweet biscuits or cheap chocolate that we tend to munch on .
but why exactly do we snack ? and if we knew what the triggers were , would we be able to stop ourselves from reaching for unhealthy foods ?