Whether you are starting from scratch, or have a well-honed routine, moving can help us feel happier and healthier. Experts share their one essential exercise and how to get the most out of it

Many of us, regardless of our age or fitness levels, know that we should be doing more exercise but are unsure where to start. So what is the ultimate exercise for improving health, longevity and general wellbeing? Here, personal trainers share the best moves, whatever your individual needs or abilities.