Ryan Seacrest got annoyed at Wheel of Fortune production for a recurring sound effect on the game show. It came just before a registered nurse won $60,000.

The simplest: Get together with another person, look in each other’s eyes and repeat the sound “ha” for a full minute. Or try the “breathe in and laugh” method. Bring your hands to your chest on a ...

Melanin Bee curves her spine like a stretching cat as she lets out a maniacal, forced laugh. The quick-fire pattern of manufactured giggles —“oh, hoo hoo hoo, eeh, ha ha ha”— soon ripples into genuine ...