Flutter kicks are a popular exercise that involves lying on your back and moving your legs up and down in small, rapid movements. This exercise targets the muscles in your lower abdomen, and can help to tone and strengthen your core. While "flutter kicks" is the most common name for this exercise, there are a few other synonyms that you might come across. Some people refer to this workout as "scissor kicks" or "floppy feet," while others simply call it "leg flutters" or "leg pulses." No matter what you call them, adding flutter kicks to your workout routine can be a great way to challenge your abs and improve your overall fitness level.