Sometimes the exercises or workouts that seem super simple are in fact the most effective. These five bodyweight moves are a perfect example. They improve stability throughout your entire core, targeting your upper, middle, and lower abs as well as your obliques. All that adds up to a flatter belly and tinier waist.
You won't find a sit-up or a crunch in this workout. These high-intensity exercises are designed to increase your metabolism and tone your core without placing any stress on your neck or lower back. They're particularly great if you sit at a desk all day, as they'll help un-slump your posture. Incorporate the moves into your current fitness routine, or perform them as one quick workout.