Have you ever felt dull, lethargic, or tired in the morning and felt like you didn’t have enough sleep? This might sound familiar because we have experienced it at some point in our life, and the main reason for this is a bad night’s sleep. When you are stuck in a poor sleep cycle, then no matter what you do, every time you wake up in the morning, you will feel groggy and sometimes having a heavy head. But few know that exercise can help in improving your sleep.