The Safest and Most Effective Nootropic

How short bursts of exercise can boost cognition
Reaction time (RT) is one of the most common ways to measure brain activity. Simple reaction time - the time elapsed between a stimulus and corresponding response - has been used to assess cognitive function in both healthy and impaired individuals. Reaction time variability (RTvar) - a measure of the standard deviation of reaction time scores - can be used to quantify attention span, and tends to be higher in people with ADHD and other attention disorders.

We conducted a study which