Not being able to stop when you know you should. Winn quotes Lawrence Kubie: “The measure of health is flexibility… and above all the freedom to stop when one is full” (315). If you don't stop and go to bed or go to the gym you're not giving your body the things it needs. Adequate sleep and exercise are critical to health. There were several times when I started watching something and couldn't stop. I knew I should get up to go to work the next day or even go to the gym, but I couldn't. I felt the need to keep watching. So I would sleep less than I should and, by not doing any other physical activities, I would start to gain weight. I can't tell you how many times a coworker has said they feel terrible because they stayed up late watching some show they just had to watch.