I tried this simple bodyweight exercise designed to improve posture, and now I’m adding it to all my workouts

Woman in sportswear on a hard floor lies on her back with her knees bent and heels on sliding discs.

I've been dealing with a knee injury for years, and since having physical therapy, I've come to realise the importance of strengthening my posterior chain—the muscles in the back of the body.

The posterior chain is often neglected, particularly by those training primarily for aesthetics who tend to focus on more easily visible mirror muscles like the abs or the biceps, but strengthening your back muscles is crucial for a healthy, functioning body.