As you have already realized, the issue of sleep is a huge one. In case you are currently dealing with this topic, you will most definitely need to narrow down your research. Apart from that, there are lots of issues which you can take a closer look at.
For instance, you can start researching the problem of sleep disorders. There are lots of aspects to cover regarding the subject under consideration. In addition, you may dwell upon the origin of sleep as well as try to explain why we need sleep in general. In case you have any particular issue you want to research, you can obviously feel free to do that. What is more, you may allocate some time in order to find the subject you would like to cover as there are lots of things we do not know about sleep. If you are not sure where to start as well as what to write about, feel free to familiarize yourself with all available information on the subject under consideration by going to …