All too often, our training gets stuck solely in the sagittal plane.
To become better movers and build a more resilient body, we've got to mix it up.
Lateral Lunges are a phenomenal exercise for doing so, as they strengthen the muscles on the outside of your hips [abductors and glutes] and provide an active stretch for the groin.
While you can and eventually should load your Lateral Lunges, start with no weight.
You can also add an overhead reach to further up the challenge of the bodyweight variation, as shown in the above video from Eric Cressey, president of Cressey Sports Performance.