Side Lunges target the quads, abductors, glutes and hamstrings. As runners we rarely move laterally (sideways) so this is a great exercise to improve our balance and coordination.
Place a miniband around both legs; this can be around the ankles or just above the knees. Clasp your hands together in front of your chest and roll your shoulders back so you have a tall posture and the chest is open. At all times, keep your toes pointing forward as you take a side step out to the right so you feel a stretch on the left inner thigh. The miniband will provide some resistance but try to work against this and don't let the band do the work for you! Pause for 1-2 seconds at the bottom and then push back up to the starting position. Repeat on the same side of the instructed number of repetitions.
Remember to looking forward throughout the movement. Avoid letting your gaze drop towards the moving leg.