A sleep essay could deal with understanding the biological phenomenon of sleep, its stages, biological role, occurrence in the animal world, etc. Alternatively, such an essay could focus on the role of sleep in a healthy lifestyle and how the latter needs to be adjusted to reap the benefits and avoid the risks. This is especially relevant given that the modern lifestyle is characterized by chronic sleep deprivation, which can lead to serious health conditions, such as problems with the circulatory system: heart failure, elevated blood pressure, stroke. Not only insufficient but also excessive sleep can be harmful. Consider carefully what you’ll cover in your essay and how to best structure it – reviewing the samples provided below could be helpful.