A certain major breakfast cereal manufacturer has just started an advertising campaign promoting the three steps to a healthier lifestyle. 1. Eat their cereal, 2. Eat more fruit and 3. Drink more water. I'm sure anyone living in the UK knows what I'm talking about and I can't help thinking they've missed out something pretty vital there. If you want to get/stay healthy - DO SOME EXERCISE.
An improved diet might well let you lose weight, and it is certainly a step in the right direction, but if you sit in an office all day and on the sofa all evening you will never really be fit and healthy. Food is often blamed (and rightly) for health problems, but the last few decades have also seen a decline in the amount of exercise that people, and particularly children, take. Walking to school or work, playing outside and manual jobs have all become less common and the result is a society growing outwards.
An active holiday of any kind can be great way to kick start a fitter lifestyle. You can exercise to prepare for the trip, exercise while you are there, e.g. by skiing every day, and when you come home full of energy it is easier to keep up the momentum and keep exercising. Skiing is one example, but there are hundreds of ways to be active - the important thing is to get into the habbit of being active regularly, even if only for twenty minutes or half an hour.