BRAIN DRAIN:
If you are slothful, your IQ will suffer. That is the conclusion of Siegfried Lehrl, a German researcher who has analyzed 35 years of hospital data. In an October issue of Oslo’s Aftenposten, Lehrl claimed three weeks of mental inactivity can cause an IQ loss of 20 points and a noticeable shrinkage of vocabulary. Worse, he suggests that full recoveries from extended periods of inactivity are unlikely.
