Fitness? In my opinion, it's the most cost-ineffective "pseudo-investment."

Spending 1-2 hours a day lifting weights, running, and sweating, only to end up sore and with a short-term good-looking body.
When you're busy and under a lot of pressure, you immediately bounce back.
High time cost, high persistence threshold, and visible returns are painfully slow.
Instead of wasting a lot of youth in the gym, it's better to learn an extra skill, have more business talks, spend more time with family, or simply sleep two more hours.
I am increasingly convinced now:
Many people work out not for health, but to create the illusion of "being very disciplined" on social media.
The truly smart people spend their energy on things that can compound, rather than repeating the same dumbbell exercises every day.