If you enjoy swimming, and enjoy a post-swim nibble, the title of this article may cause you to worry. After all, if you want to lose weight, the Government’s advice is simple – “eat less and do more”. For most people, this makes absolute sense. After all, we have had the message drummed into us for the last 30 years. In addition, everyone knows that body weight is simply a matter of balance of calories in versus calories out. Eat too many calories, and you will put on weight. Do a few more leng...