I recently heard a student council kid bragging about his eye bags. He told the story with a superior tone that he only slept for two hours because he was preparing a campus event and doing practicum reports. In his head, he felt like a hero making a holy sacrifice. In my head, he is making a scam investment whose return is definitely minus.

If we use a finance or portfolio management theory lens, our daily energy is like limited capital. And sleep is not an expense, but the safest reinvestment with the most stable compound interest.

The problem is, many students are trapped in a toxic hustle culture mindset. They choose to short sell their sleep time to get short-term profit in the form of finished assignments or praise from seniors. But statistically, the performance of a sleep-deprived brain plummets drastically.

Writing code when you are sleep-deprived is exactly like trading crypto on 100x margin while drowsy. You might feel productive because your fingers keep typing. But the next morning when you review your code, it is just full of bugs, logic errors, and variables with unclear names. You have to refactor everything you did last night. In the end, the cost of fixing bugs (the time to fix them) is much greater than the time you "saved" from not sleeping.

This is what in finance is called a negative yield. You put in capital, but instead of getting a profit, you take a loss.

So how do you manage your time portfolio correctly?

First, diversify your activities, but treat sleep as a low-risk government bond asset that gives certain returns. Never mess with your 7 to 8 hour sleep allocation just to do speculative things like playing ranked games until morning or scrolling TikTok. If you want to take the risk of staying up late (high-risk high-reward), only do it during an absolute emergency like your server going down or a project deadline being hours away.

Second, be self-aware of the concept of diminishing returns. From 10 PM to 12 AM your brain might still be sharp and can give maximum output. But entering 2 AM to 4 AM, your efficiency drops to 20 percent. You are just working on assignments half-asleep, making typos everywhere, and unable to think clearly. Instead of forcing work with a 20 percent yield, it is better for you to cut loss (sleep), let your brain recover its energy, and wake up in the morning with a 100 percent yield.

Third, do not use a sleep debt system. Some people think they can sleep 3 hours on weekdays, then take revenge by sleeping 14 hours on Sundays. That is a flawed economic theory. Your body is not a bank that can accept energy debt installments. If you lack sleep every day, your hormones get messed up, your immunity drops, and eventually you collapse sick. When you are sick, all your portfolios (college, work, hanging out) crash simultaneously.

So, stop feeling cool because you do not sleep. Your sleep is the foundation of all the algorithms and systems you will build tomorrow morning. Taking care of yourself is the simplest form of good risk management.

Khay