Questions 22 to 25 are based on the passage you have just heard. 22.A) It occurs when people are doing a repetitive activity. B) It results from exerting one’s muscles continuously. C) It happens when people engage in an uncommon activity. D) It comes from straining one’s muscles in an unusual way. 23.A) Blood flow and body heat increase in the affected area. B) Body movements in the affected area become difficult. C) They begin to make repairs immediately. D) They gradually become fragmented. 24.A) About one week. B) About two days. C) About ten days. D) About four weeks. 25. A) Apply muscle creams. B) Drink plenty of water. C) Have a hot shower. D) Take pain-killers.