The one idea that has had an abundance of real life applications is the idea of maintaining a circadian rhythm. As a refresher, the text defines your circadian rhythm as the cyclical changes that occur on a roughly 24-hour basis in many biological processes. This is an idea that I have tried to address in my life, because I think it is very important for my body to be on par with what it needs to do. In other words, it's essential that I get enough sleep to be alert for the next morning. The way I do that is by getting to bed at about the same time, and getting up roughly around the same time everyday. Unfortunately, I am breaking my habits of getting to sleep right now.
Earlier this year, I had the fortune of going to Europe for a one-week vacation. Our plane left on a Friday morning, and after a few connections, was scheduled to arrive in Switzerland that next morning, that Saturday. Through all of the flights there, I stayed awake, too excited to get to sleep. As a result, I had already stayed up about 18 hours by the time our plane arrived. When we arrived, it was morning in Switzerland, just as I began to feel tired. Yet, we had a day of sightseeing planned, and I had to stay awake till 10:30 that night, when we would return from dinner. This was a case in which my circadian rhythm was thrown off dramatically. After slouching over my food at a fancy restaurant and being seen as impolite by the locals, I decided that it was important to maintain my circadian rhythm, because it truly is necessary to being happy, alert, and healthy.
Today, I do my best to get to bed and wake up at set times, because I understand the importance of this psychological idea. It helps me stay awake, and has made me more healthy.
I have noticed that this idea must impact celebrities like athletes, actors, and the president. It must be difficult for them as they travel around the world to adjust to time zones while also getting enough sleep. In fact, below is an article about tennis star Novak Djokovic not feeling up to playing in a tournament due to the vast amount of flying he had done in the prior few days.