Fu 10 Night Crawling — Work

: Worms are sensitive to white light and will retreat quickly; a red light or a headlamp with a red setting is less likely to startle them.

The science behind FU 10 was rooted in human sensory biology. At night, the human peripheral vision is more sensitive to motion than direct sight. A fast-moving object — even a dark one — triggers an instinctive alert. But something that drifts at less than 0.3 meters per second often gets filtered out as wind, shadow, or animal movement. FU 10's prescribed pace was 0.25 meters per second.

Large earthworms surfaced at night and used for fishing bait.

: Worms are sensitive to white light and will retreat quickly; a red light or a headlamp with a red setting is less likely to startle them.

The science behind FU 10 was rooted in human sensory biology. At night, the human peripheral vision is more sensitive to motion than direct sight. A fast-moving object — even a dark one — triggers an instinctive alert. But something that drifts at less than 0.3 meters per second often gets filtered out as wind, shadow, or animal movement. FU 10's prescribed pace was 0.25 meters per second.

Large earthworms surfaced at night and used for fishing bait.