Preparation: Standing at the front of your mat, step back with your right foot about a leg length or less. Keep the back heel on the ground and point your toes towards the upper right corner of your mat.
Execution: Keeping the back heel rooted on the mat, take your right hip forward and lunge, keeping the left knee directly over the left ankle. Take the arms overhead for a greater stretch.
Notes: Keep the back heel rooted on the mat to stretch the calf muscle, if it lifts even a millimetre, the calf muscle will engage. It’s more important to keep the hips square to the front of the mat than it is to take the right foot too far back. Make sure you do both sides!