Let's be honest, exercise can sometimes be a drag, especially when you can't seem to find a workout that keeps you motivated until the very end. One can only do so many burpees and HIIT intervals [1] before you start to think about how great a burger sounds right now. If you've encountered this problem, try trading your usual workout for a music-infused dance routine [2] that'll get your heart racing and muscles toned. From samba to salsa to hip-hop, these 15-minute workouts [3] will have you too energized to realise how tired you are, or for that matter, how many calories you're burning.