Wearable technology may be all the rage when it comes to tracking your steps, but Jim Kovach believes it can provide some tangible information for Parkinson's disease patients as well. The former president of the Buck Institute for Aging Research in Novato, San Francisco 49ers linebacker and medical doctor is a cofounder of Beneufit Inc., a San Francisco company seeking to use wearable data to coach patients through exercise regimens shown to help Parkinson's patients. Exercise is important for…