Being fit and healthy is a 2 sided approach. You can run 50 miles a day but if you are taking onboard more calories than you are expending then it must be stored as fat. So as well as exercise you must undercut your daily calorific needs a bit and then you will slowly and surely get smaller and fitter, revealing the toned you underneath. So exercise AND eat well, avoiding processed foods wherever possible and keeping it as naturalas possible. For more detailed nutritional information have a look at out nutrition fact sheet on the knowledge page, where you will find lots of nutritional tips used by personal trainers to get certain results.