Forget the gym — you only need 15 minutes and a pair of dumbbells to build full-body muscle

Woman performing a dumbbell workout.

Full-body home workouts are ideal if you haven’t got much time or motivation. These sessions, like this personal trainer's 15-minute dumbbell routine, are designed to work several muscles simultaneously for maximum efficiency. 

All you need is a set of dumbbells, so if you're at the gym, grab a pair that'll challenge your muscles but won't affect your form. But for home workouts, it's worth picking up a set of the best adjustable dumbbells so you can quickly change the load between moves if needed.