Burpees are a full-body exercise that combines a squat, push-up, and jump. To perform a burpee, start in a standing position, drop into a squat, kick your feet back into a plank position, do a push-up, return to the squat, and then jump up explosively. This movement engages multiple muscle groups, including the chest, arms, legs, and core. Burpees are often used in fitness training and high-intensity interval training (HIIT) because they improve cardiovascular endurance and strength. They can be modified for different fitness levels, making them accessible for beginners and challenging for advanced athletes.