February 10, 2013
THE REST OF THE DAY WE'RE JUST STEALING MONEY FROM OUR EMPLOYERS:
Relax! You'll Be More Productive (TONY SCHWARTZ, 2/10/13, NY Times)
As athletes understand especially well, the greater the performance demand, the greater the need for renewal. When we're under pressure, however, most of us experience the opposite impulse: to push harder rather than rest. This may explain why a recent survey by Harris Interactive found that Americans left an average of 9.2 vacation days unused in 2012 -- up from 6.2 days in 2011.The importance of restoration is rooted in our physiology. Human beings aren't designed to expend energy continuously. Rather, we're meant to pulse between spending and recovering energy.In the 1950s, the researchers William Dement and Nathaniel Kleitman discovered that we sleep in cycles of roughly 90 minutes, moving from light to deep sleep and back out again. They named this pattern the Basic-Rest Activity Cycle or BRAC. A decade later, Professor Kleitman discovered that this cycle recapitulates itself during our waking lives.The difference is that during the day we move from a state of alertness progressively into physiological fatigue approximately every 90 minutes. Our bodies regularly tell us to take a break, but we often override these signals and instead stoke ourselves up with caffeine, sugar and our own emergency reserves -- the stress hormones adrenaline, noradrenaline and cortisol.Working in 90-minute intervals turns out to be a prescription for maximizing productivity. Professor K. Anders Ericsson and his colleagues at Florida State University have studied elite performers, including musicians, athletes, actors and chess players. In each of these fields, Dr. Ericsson found that the best performers typically practice in uninterrupted sessions that last no more than 90 minutes. They begin in the morning, take a break between sessions, and rarely work for more than four and a half hours in any given day."To maximize gains from long-term practice," Dr. Ericsson concluded, "individuals must avoid exhaustion and must limit practice to an amount from which they can completely recover on a daily or weekly basis."
Posted by Orrin Judd at February 10, 2013 8:44 AM