The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph.

P: Pilates is a form of exercise which concentrates on strengthening the body with an emphasis on core strength.

Q: Similar to Yoga, Pilates concentrates on posture, balance and flexibility

R: This helps to improve general fitness and overall well-being.

S: which makes the chance of injury is much lower than with other more strenuous forms of exercise.