3 ms·
Stare into space as long as you can without blinking, internally, count the interval until when you're forced to blink. Modulo by 2 to get a zero or one. Repeat
by vunderba 3y ago
Stare into space as long as you can without blinking, internally, count the interval until when you're forced to blink. Modulo by 2 to get a zero or one. Repeat as necessary.
- c1plus1equals10 3y agoMy thought was similar: if you breathe in & out equally, you can use that as a quantifier. If not, count the seconds of your breath, modulo by 2 to get a zero or one.