What it is: A box step-up is a single-leg strength move that builds powerful, stable legs. You can scale it by changing step height and by adding dumbbells as you get stronger. Why it’s worth doing: • Strengthens bum and legs • Improves balance and hip stability • Supports knees and everyday movement • Easy to progress by adding weights How to do it: • Start bodyweight to learn control • Progress to holding dumbbells by your sides or one weight at your chest • Use a step with risers that suits y