
Your core connects your upper and lower body, playing a crucial role in your balance, posture, stability and blood flow. But you don't need endless sit-ups to strengthen your mid-body muscle, as this trainer's five-move dumbbell core workout is a great place to start.
You only need a single dumbbell to get started, although you can increase the challenge using a pair. If you regularly train at home, it may also be worth investing in a set of the best adjustable dumbbells, as you can quickly change the load between exercises, but also gradually as you get stronger.