Why exercise? The fitter you are, the smaller your chances of injury. Damaged knee ligaments top the list of most common injuries – followed by thumb injuries, fractured ankles and back injuries. By preparing well prior to your holiday, your muscles will be efficient and your aerobic fitness improved. As a fit skier you can more efficiently dispose of waste products of skiing (e.g. lactic acid – which makes legs sore). Fit skiers don’t need rest days and can ski every valuable day of the holiday.