The company only has 2.5 hours of working time in the morning. In order to have a stable nap at noon, I have always reserved my coffee for after waking up from my nap. This has resulted in the two hours in the morning often slipping away in drowsiness and distraction.

I wake up from my nap at 1:30 PM and then go buy coffee. What problems will drinking coffee close to 2:00 PM cause? Based on my physical condition, I can work more energetically from 3-5 PM, and after 6:00 PM, when I'm driving home from work, I can also concentrate better and reduce the likelihood of dozing off while driving. However, this also leads to not feeling sleepy until 11-12 PM, after I get home, and even after taking a shower, I don't feel sleepy until almost 1:00 AM.

Recently, I tried buying coffee as soon as I arrived at the company and drinking it at 9:00 AM. As expected, I couldn't sleep during my noon nap, but surprisingly, my spirit remained good throughout the afternoon until I drove home, and after the coffee was metabolized, I started to feel sleepy after 11:00 PM.

This way, I can also make use of my lunch break to do something or read, and I can have enough sleep at night, which is great.