I had a patient whose back pain always returned after the weekend.  He traveled 3-4 days a week out of town,  but we couldnt trace the source of the Monday return of low back/left hip pain. He was not doing projects around the house. He walked but didn't workout.  His mattress was comfortable.  Finally I had him recite his list of typical weekend activities and one stuck with me: he loved driving his mustang convertible for 1 to 2 hours on Sundays.  It was a stick-shift and when asked he told me the clutch pedal was REEEEL heavy.  Bingo! 

 I prescribed a "Mustang Abstinance"  month and -  to our relief  - the pain did not return.  I advised that he shop for an automatic sports car to trade for. 

I did not buy a convertible that year.