Bob Greene
Bob is taking questions from callers who are serious about losing weight, getting healthy and reaching their fitness goals. He talks with one caller who wants to know how she can find room in her busy schedule for both cardio and strength training, which he says are both essential tools for combating the signs of aging.

Another caller looks to Bob for information on the connection between weight loss and vitamin D deficiency. Then, Bob offers advice to a caller with knee and shoulder injuries about how to find exercises that will work best for the physical challenges she's facing. Plus, Bob shares insights into building muscle mass in just 30 minutes a day with a caller looking to buff up for summer.