Harvard researchers think they’ve found the protein that stops the growth of new neural connections in adult brains. The more you have of it, the less you are able to learn. Our theory: George Bush and Donald Rumsfeld have been freebasing this stuff for years.
Driving while talking on your cell cuts by half the brain’s ability to recognize and respond to traffic conditions, according to a study. Says a researcher: “Twentysomethings on a cellphone have the same reaction time as 70-year-olds.”
Sleeping in bed with a woman impairs a man’s mental abilities the next day and increases stress hormones, a study has found. This is despite most men reporting a better night’s sleep alongside a woman, and happens regardless of whether the couple has sex. The impairment doesn’t appear to apply to women.