Many of us maintain a strong workout routine but neglect the importance of sleep in reaching body composition goals. Sleep plays a vital role in hormone regulation, fat metabolism, and muscle recovery. Research shows that inadequate sleep, combined with a diet high in refined carbs, can dull insulin sensitivity, reduce muscle growth, and inhibit fat burning. Just two days of poor sleep can give you the insulin sensitivity of a prediabetic. If you're not seeing results from your training, it might be time to focus on improving your sleep quality and recovery to boost muscle gain and fat loss potential.