Originally Posted by sansaephanh
If anything hurts, change everything you can... I developed tennis elbow recently because of dead multi. The second i switched to a new bed, it was almost instantly cured.
Checklist in priority
I think it comes down to that order through common sense AND cost effectiveness.
I agree with this order but the gap between 2 and 3 is very small. Both can do harm to your arm if they are stiff.