Most patients who experience a stroke have relatively good recovery after active treatment and rehabilitation exercise, but very few patients can recover to the physical state they were in before the stroke. This is mainly because after the stroke, brain cells are damaged due to ischemia and hypoxia. Since brain cells are non-regenerative tissues, it is difficult for them to regenerate once they are damaged. The function of the damaged brain cells is mainly compensated by the undamaged brain neurons.

Therefore, even with active treatment, it's not possible to return to a completely normal state. However, even so, it is still crucial to actively pursue treatment and rehabilitation exercises after a stroke, as these can significantly reduce the disability and mortality rates caused by the stroke.