But if you live in an apartment with downstairs neighbors, they may not be too enthused by your energetic squat jumps overhead. Fortunately, there are ways to get the same boost from your workouts, without having to jump or create too much noise for the neighbors. That said, you can perform the above workout three times per week and alternate with a light version of cardio (perhaps an afternoon walk), pilates, or yoga. For now, enjoy your quiet, jump-free HIIT class.