fill in the blank with correct word or group of words to complete the thought of sentence:
1.) exercise_______to strengthen muscle and ligaments
2.)bend your_______rather than your back to pick up a load and lift with your thigh muscle
3.)maintain correct________in lifting
4.)_________someone for help if you have to move a heavy load by hands
whenever possible, use 5.)___________6.)_________and 7.)___________possible treatment include 8.)______________9.)___________and10.)________________
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