The first recorded reference to any type of yo-yo in the U.S. came only in 1866, when Ohio tinkerers James Haven and Charles Hettrich came up with a design improvement. Their patent on November 20 ...

Yo-yo dieting is a pattern of losing and regaining weight in a cycle, and it can lead to many health issues. Here are the ...

Fat cells retain a 'memory' of being overweight even after pounds are shed, allowing them to quickly revert to their former ...