A sizzling mix of step combos done in interval-style with hot step drills that will challenge the advanced exercisers. The DVD has multiple options for different lengths of workouts for optimal fitness results. Nekea Brown is a nationally certified instructor in fitness with more than a decade of experience and was the star of Mix It Up and Street Dance Workout DVDs.. She has a Master of Arts degree in Education and Human Development and uses her education and teaching skills in her daily job as well as her instructor work.