AP English Language

Read the paragraph. What is the point of the concluding sentence in the paragraph?

The third consequence-weight gain-can happen even if people are not eating more food than usual. At night, the body processes the calories a person eats during a day and turns them into energy. A lack of sleep disrupts this process. it sends a signal to the body that it needs to digest food more slowly. After just four days of not getting enough sleep, the body stops processing calories effectively and stores them as fat instead. One of the easiest ways to start losing weight is to get more sleep.