In today’s world of fitness, technology and group exercise are commonly part of a person’s workout routine, and a University of New Mexico educator says we have come a long way since the beginning of exercise. Dr. Len Kravitz , professor of exercise science and coordinator of exercise science at University of New Mexico, spoke with “ Take Care ” about the history and current state of exercise. His latest book is "HIIT Your Limit: High-Intensity Interval Training for Fat Loss, Cardio and Full