As well as exercise, other issues are important for our health, such as diet, smoking(not) sun protection. A healthy diet is just as important as exercise for good health. An ideal diet is known as flexitarian, where most of the diet is fruit and veg. But with only two to three portions of meat per week, to reduce saturated fats (portion size is the size of your own palm). Red meat is important for iron, but also chicken is good (remove the skin to reduce the fat). Also: Reduce saturated fat (the most important) Wholemeal carbs for fibre Increase Omega 3 from oily fish (two to three times per week) also walnuts, Linseed. Mackerel and Salmon are ideal, but watch out on the Tuna, as although it should be ideal, it often has the Omega 3 removed in processing. (Omega 3 calms inflamation in the body). Best oils are Sunflower or Rapeseed oil. A few nuts are great. Reduce "empty" calories; i.e., food that has little or no nutritional value, except for calories such as sugar and alcohol. Take in more calories than you burn and the excess will be stored by the body as fat. Oils, fat, sugar, alcohol, nuts are all high in calories. Smoking is very bad for health. Protect your skin from intense sunlight. (Vitamin D supplement can be a good idea).