Having worked in the IT industry for over 15 years, I've seen all kinds of beverage trends.

There was the energy drink era, the time when iced Americanos were all the rage, and nowadays, zero-calorie drinks are the trend.

In the office, there are always developers with stacks of Monster Energy cans piled up like towers.

At one point, I was also drinking four to five cups of coffee a day as a norm.

But after hitting my mid-40s, I realized something for sure. Ultimately, the answer is water.

Do you know what happens when you gulp down coffee for breakfast, lunch, and dinner every day? Your body actually becomes dehydrated faster.

The caffeine in coffee acts as a diuretic. The more you drink, the more moisture you lose. Energy drinks are even worse.

When caffeine is combined with sugar, that's not a drink; it's a burden.

It's a structure where you use energy now and have to pay back with a crash two hours later.

Water is different. It's absorbed immediately when you drink it, and cells use it right away. There are no side effects. It's not addictive.

These days, many people live on zero-calorie cola and say, "I'm managing my health."

However, research continues to show that artificial sweeteners can affect gut microbiome balance.

While there's no definitive conclusion yet, it's clear that the risk is not zero.

And water? The risk is truly zero. There's no need to look at the ingredient list. H2O, that's all there is.

Do you know what the best solution is when designing a system?

It's simple, has no side effects, and works reliably in any environment.

Water is exactly that. Zero calories, zero side effects, and can be found anywhere in the world.

This is what we call an elegant solution in engineering.

Complexity is not good. Simplicity is strength. A truly good solution doesn't need an explanation.

I've experienced this myself; I decided to only drink water in the mornings starting three years ago.

I have one cup of coffee when I get to work in the morning.

At first, it was tough. Honestly, I had a bit of a headache for a week.

I was that dependent on caffeine. But after about a month, my morning focus definitely changed.

My eyes were less tired during code reviews, and the afternoon slump decreased.

Drinking water turned out to be a kind of performance tuning. Why not take a free upgrade?

So my thought is not to be fooled by marketing. Beverage companies don't care about your health.

No one advertises water. There's no margin in it. But sometimes, what no one advertises is the best option.

Water doesn't follow trends, has no ingredient controversies, and is almost free.

In the end, I believe the simplest and most certain habit for maintaining health over the long term is to drink water frequently.