Final answer:
A Phase 5 flexibility routine indeed includes both static and dynamic stretching to improve flexibility and range of motion.
Step-by-step explanation:
The statement that a Phase 5 flexibility routine typically involves static and dynamic stretching is True. During a Phase 5 routine, it is common to include both static stretches, which involve holding a stretch position for a certain period, as well as dynamic stretches that involve movement. Combining these two types of stretching helps in improving overall flexibility, range of motion, and prepares the muscles for more intense activities.