The Chicago Cubs weren't just fighting against 108 years of history on their journey to the World Series win last year. They also apparently were battling jet lag.
Traveling even just two or three time zones can cause jet lag that hurts Major League Baseball players' performance, according to a Northwestern University study set to be released this week.
Players' internal clocks can shift about an hour per day, so traveling farther than one time zone can cause things to go awry, said Ravi Allada, the neurobiology professor at Northwestern who led the study.
The same goes for us nonprofessional athletes.
"When you travel, your (internal) clock doesn't...