Different types of stretching include static, dynamic, ballistic, and proprioceptive neuromuscular facilitation (PNF). Static stretching involves holding a stretch for a duration to improve flexibility and is often used post-exercise. Dynamic stretching incorporates movement and is beneficial as a warm-up to prepare muscles for activity. Ballistic stretching, which uses momentum to push the body into a stretch, can enhance flexibility but carries a higher risk of injury. PNF involves alternating contraction and relaxation of muscles to gain greater flexibility. Each type has unique benefits and fits various fitness goals.