Physicians routinely prescribe Donepezil (Aricept), Galantamine (Razadyne), and  Rivastigmine (Exelon) for patients who have Alzheimer’s or other forms of dementia. But they often ignore the clout of activities such as walking, knitting, woodworking, and puzzles. In this article, I explain why many common activities have the potential of holding in check the ravages of Alzheimer’s and other forms of dementia.