Ultradian Rhythms (90/20)

While Pomodoro is excellent for task initiation, deeper cognitive work often requires longer sustained focus.

Ultradian rhythms refer to biological cycles that occur more frequently than once a day (circadian). Research suggests human attention naturally cycles in 90 to 120-minute waves.

The Protocol

Work intensely for 90 minutes, followed by a complete disconnection for 20 minutes to allow neurological recovery.