Soul great Smokey Robinson is urging modern R+B stars to take care of their health after discovering you can only maintain a good voice if you're fighting fit. The I SECOND THAT EMOTION singer, who also owns a line of healthy foods, fears too many performers lose track of good health as they get older - and this affects their voices. He says, "Your voice is your instrument, and it's what you use the most. "If your body is run down, and if you're not taking care of yourself, then the voice is going to go. It's going to suffer. "I take care of myself... People don't come to see you if you are hoarse."