In the jet lag period immediately following the time difference, they had trouble learning simple tasks that a control group easily mastered.

FORBES: Why Holiday Travel Makes You Dumb

Cyber Monday is a marketing term created in 2005 by online retailers after learning that online shopping activity increased the Monday following Black Friday.

FORBES: Online Holiday Sales Hit Nearly $6 Billion for the Week

Now the attention turns to Cyber Monday (tomorrow), a marketing term created in 2005 by online retailers after learning that online shopping activity increased the Monday following Black Friday.

FORBES: Holiday Shoppers Flocking Online Create Record Breaking Sales