What is the Difference Between Similar But Different Things, Terms, and Objects

What is the Difference between Leg Lifts, Planks, Pilates, Crunches and Situps

Regular exercise is the sign of leading healthy life. Exercise is as necessary for a person, as balanced diet. However, there are different types of exercises and each exercise is related to some particular body organ as well as specific aim. Leg Lifts, Planks, Pilates, Crunches and Situps are the names of different types of exercises.