Why do I feel exhausted halfway through each day, but totally alert when it's time to go to bed?

This is fairly normal and happens to most people. Mid-day sleepiness is nearly universal and some cultures even incorporate mid-day naps to manage it.

Alertness in the evening is the bigger issue. You maybe mentally retarded.

>>81952458 (OP)
I don't struggle with this.
I'm strict about getting 8 hours of sleep every night. I also avoid caffeine or energy drinks altogether.

>>81952458 (OP)
that's siesta, perhaps one of your ancestors was a sp*niard

>>81952458 (OP)
Some people are natural night owls. We are fucked and doomed to live in a society not built for us.

>>81952458 (OP)
That's the worms that come out of your butt at night keeping you in an excited state

>>81953162
most people are night owls, the difference is they spend their waking hours in the night FUCKING HARD which is what your supposed to do with that time

>>81952458 (OP)
you have adhd i have adhd and i am like this too