Mobility, cardio and strength are important, but power – generating force quickly – is the workout element that will help you stay active for longer, say health and fitness experts Mobility, cardio and strength are important, but power – generating force quickly – is the workout element that will help you stay active for longer, say health and fitness experts C hasing after your dog, catching yourself before you fall, jumping over a big puddle. These activities all have something in common, and