His second act: Following his retirement from medical equipment sales, Bill Konowitz ’75 knew he needed to find a hobby to get him out of the house. A longtime physical exercise advocate, he signed up for an aerobics class at his local YMCA — and was immediately hooked. Two years later, he became a certified fitness instructor and, more recently, was featured in Men’s Health. “Exercise has the greatest power in determining how we will live out the rest of our lives,” Konowitz told the platform ROAR Forward.