In the early internet era, a strange subculture emerged on forums and file-sharing networks: frequency terminals. Users would plug in headphones, load obscure audio programs, and let layered sound frequencies alter their state of mind. It was raw, low-fi, and felt like hacking your own brain.

The science behind it is real. Two slightly different frequencies, one in each ear, create a phantom third frequency your brain synchronizes to — a phenomenon called binaural entrainment, discovered in 1839 and studied for its effects on focus, relaxation, and brainwave states.

This is caffeinate_ — a neural frequency terminal for the modern coder. Like the command that keeps your machine awake, this keeps you awake. Just sound frequencies, headphones, and willpower. The only boost you need at 3AM when the deadline is real and the coffee ran out.