This is one of my "go to" lower body workouts when I want to really feel the burn! It will challenge your quads and glutes from beginning to end! Because you are working the large muscles of your lower body, you will burn serious calories....I burned over 500! All you need is 1-2 kettlebells (can also use dumbbells) and you can do it anywhere. We love using kettlebells because they are so versitile and easy to use.