When we talk about modifiable risk factors for developing or controlling type 2 diabetes, we usually focus on food and fitness, and their effect on weight. Smoking is also an important modifiable risk factor, as is sleep duration and quality, which are the topics of this meta-analysis. Short sleep duration, usually defined as less than 6 hours of sleep per night, has the biggest impact, followed by poor sleep quality, and longer sleep duration (usually >8-9 hours of sleep/night). Altering sleep patterns isn’t easy, but neither is making food and exercise changes. Changing your morning routine, or going to bed a little earlier, are unappreciated approaches to improving your metabolic health.