The "3 Day Effect" refers to the cognitive and emotional benefits experienced after spending 3 days, or 72 hours, immersed in nature.

The concept suggests that three days in natural settings can significantly reduce stress, enhance creativity, and improve mental clarity. Studies by cognitive neuroscientists indicate that after this period, individuals often exhibit increased problem-solving abilities and a 50% boost in creative thinking.

The theory proposes that the first two days allow the brain to unwind from urban stimuli, and by the third day, deeper mental processes and a sense of well-being emerge. These benefits are linked to decreased activity in the brain's prefrontal cortex, which is associated with lower stress levels and enhanced focus​.

It's generally recommended that while we all take walks in the park during the week and go for hikes every other month, at least once per year we go off grid for 3 days and feel those effects.