Feng Shui Basics. Whether you are a sceptic or not, maybe you can give it a try. Turn your bed around for it to face South (the head of the bed towards the North).If you can not possibly do this, just place a magnet underneath your bed to inverse the polarity of it. It is said it helps you sleep better and energizes you during your sleep.
Turn off all electronic devices. You already spend your entire days on these, people can wait for your night to be over to call you or send you any message. For the very first part of your sleep, you need no disturbance what so ever.
If you want to do sports and it seems to be the only time you can. Don't do any "hard" sports. They would stimulates your organisme and would keep you wide awake. Try yoga or stretching to avoid this effect but still have a good body shape.