Exercise with disc: ① YES exercises: walking, swimming (no butterfly), stationary cycling, McKenzie extension, core strengthening (gentle), ② NO exercises: bending forward, twisting with weight, heavy lifting, sit-ups, leg lifts (initial phase), ③ start gradually, ④ proper form essential, ⑤ doctor/physical therapist supervision recommended. Movement is medicine — bedrest worsens disc problems. Activity within pain tolerance promotes healing.