For many people, the same computer-based jobs that have taken the physical element out of work also take up so much time that exercise is the last thing they feel like doing when they get home. The key to finding time to exercise is to realise two things. It doesn't have to take very long – just half an hour a day, in ten-minute bursts if necessary. It can be built into your day-to-day life it doesn't necessarily have to be found as additional time.