On the opposite side of the spectrum from too much multi-tasking is what happens if you single-task intensely for 15 hours a day, 300+ days a year. For guinea

On the opposite side of the spectrum from too much multi-tasking is what happens if you single-task intensely for 15 hours a day, 300+ days a year. For guinea pigs we have professional online poker players, one of whom started noticing some problems, got some brain scans and wrote about it here[0]. The TL;DR is his doctor told him if he kept it up he'd have stroke before he turned 50. For reference, if you're "multi-table grinding" as a poker player you may average 750-1,000 hands per hour. At 750 hands/hr that's about 1 hand per 5 seconds. That's a single task repeated over 10,000 times a day, sometimes every day for months at a time. As with everything, balance seems to be the key. [0] - http://www.cardplayer.com/poker-news/15033-dusty-schmidt-this-is-my-brain-this-is-my-brain-on-poker http://www.cardplayer.com/poker-news/15033-dusty-schmidt-thi...