If you stroke it while praticing recoil control and tracking your results will advance about 7x the normal pace.
And there is good reason for this:
You see: by depriving your brain of oxygenated blood by supplying your bits, you minimize the concious descision making and thought processes, minimizing somatic motor control decisions. Instead you're simulating a flight or fight response with a heightend heart rate, breathing and sweating, forcing the sympathetic nervous system to form new reflexes at an accelerated rate as a survival mechanism.
I nature, this saves your life, but in the finals it's gonna increase your accuracy and ruin your underwear (a small price to pay)