A wonderful exercise

A neighbor of mine, Myron, in his mid-50's, had a relatively minor heart attack, and while he was in the hospital, he complained to his cardiologist that he thought that his sex life was over. The cardiologist said, "Not true, Myron. Sex is wonderful exercise for your heart. After you get home, you should have sex 3 or 4 times a week. It'll be the best thing you can do for your recovery." So after his discharge (from the hospital), Myron tells his wife what the doctor had said. His wife looked at him and told him, "That's wonderful, Myron! Sign me up for twice."