Different types of exercises target specific muscle groups based on their nature. For instance, strength training primarily builds muscle through resistance exercises, focusing on major muscle groups like legs, back, and arms. Aerobic exercises, such as running or cycling, improve cardiovascular health and engage large muscle groups repetitively. Additionally, flexibility exercises, like stretching or yoga, enhance range of motion, targeting connective tissues and muscles alike. Core workouts strengthen abdominal and lower back muscles, essential for overall stability. Thus, varying exercise types ensures comprehensive fitness development and targeted muscle strengthening.