1.Sleeping for at least 8 hours a day and getting quality sleep what that means is, it's not only the hours that counts but how you sleep within those hours for eg. if you wake up repeatedly during the night for any reason that would mean that you are not getting to the REM phase of sleeping in more simpler terms sleeping has different phases,light sleeping and deep sleep has different effects on the body when you sleep at night you should get into deep sleep if you don't get that you would not be rested and you would feel tired all day even though you sleept 8 hours or more. So think about the quality of sleep. 2. Be hydrated! Dehydration causes tiredness. When you wake up drink enough water. 3. Exercise ! You might think working out in the morning cause you fatigue but that is not true at all. The chemicals released from the body when yoi exercise will release "happy" chemicals like endorphins. That is to say you'll be feeling energetic all day. Try it, might not feel good for the first few days but once you get the hang of it you will be addicted. 4. Drink milk or take a warm shower or tire yourself physically . These are some of the things you can do to a get a good night sleep.