Which exercise would best activate the gluteus medius?

The side leg raises are particularly effective for activating the gluteus medius because this muscle is primarily responsible for hip abduction and stabilization during unilateral movements. When performing side leg raises, the gluteus medius is engaged to lift the leg away from the body while maintaining pelvic stability. This exercise specifically targets the lateral aspect of the hip, maximizing the activation and strengthening of the gluteus medius muscle.

In contrast, other exercises provided do not focus on the gluteus medius. Standing calf raises primarily target the calf muscles; hamstring curls focus on the hamstrings; and tricep dips emphasize the muscles of the upper arms and shoulders, none of which are aligned with the activation of the gluteus medius. Therefore, side leg raises are the optimal choice for effectively engaging this specific muscle group.