Lets say that every day, you get the mail out side your home, and that to get there you need to walk over the grass, and that every day you walk in a straight line over the same path, what happens to that grass? It won't have enough time to recover and it will die.
Now lets say that everyday you take a different path... well then, the grass will have enough time to recover and regenerate, the same goes with joints, ligaments, tendons and muscles.
So, my suggestion to you is:
1. Modify your exercises as much as possible.
2. Change the body positions within a neutral zone as often as possible.
3. Tweak the range of motion, distance, depth, ground level, environmental stability, quantity, frequency, direction, level of difficulty, resistance and speed.
Read post # 22 for more on progressions, modifications and tweaks.
