This Pilates wall workout builds a stronger core and improves your posture in just 20 minutes — here's how

Woman performing a wall Pilates workout at home.

Pilates is a great way to strengthen your core, but you don't need to head to a studio for a reformer class to get the benefits. Instead, all you need is 20 minutes, a bit of space, and this personal trainer's wall-based routine.

As its name suggests, this type of Pilates involves the resistance of a wall and your body weight and helps to mimic the use of a reformer Pilates machine, which can be costly.