I'm a personal trainer and whether I'm training seniors or myself I'll use this 20-minute dumbbell circuit to build lower-body strength

In a group fitness class, three people hold a dumbbell to their chest and perform a goblet squat, with their feet and knees wide. .

This 20-minute AMRAP workout strips leg day back to its basics.

It features four moves, each chosen to target the biggest muscle groups in the lower body, to help you build functional strength.