Imagine turning off your daily alarm, and refraining from that afternoon cup of coffee to keep you awake after you start to feel tired. Imagine yourself with no ensuing assignment deadline, or 5am task awaiting you, filling you with fear or excitement. Now you may wonder, how exactly would we wake up without a blaring phone or how would we fall asleep without exhausting our bodies nearly to the breaking point every night. Our bodies are actually much more complex than we think. Imagine the instructions to build and maintain our bodies are compiled into a book – a very long and convoluted book, known as our genetic code. And one chapter in this book has instructions written for setting an internal clock, known as our central circadian rhythm. Simply put, our circadian rhythm tells our brain that it is time to be awake in the presence of light, and asleep in the presence of dark.