It's not something we are used to seeing, a room full of people laughing at nothing in particular.
"We're not going to be telling jokes," said Tobey Gifford, with The Lemon Tree Yoga & Healing Arts Studio in Glens Falls.
"We're going to pretend we are on the phone with someone hysterical," said Gifford, as she led the class.
The class is called laughter yoga. It was started by a doctor in India named Dr. Madan Kataria.
"What he found was that people who were incorporating laughter into the healing process were healing much faster than people that weren't," said Gifford.
Now there are thousands of laughter clubs across the globe, including one in Glens Falls, where Tobey and her daughter Missy, lead exercises to bring about the giggles.
The laughing group is open to anyone and it's free. Different people show up each week, most are strangers of all ages. But that doesn't matter. Laughter is universal - and so are the benefits.
"I feel very relaxed," said Carol Smith, from Glens Falls. "I can't wipe that smile off my face."
"It's a cardiovascular workout, they've studied the benefits to the heart," said Gifford.
She says that it is a good option for people who can't do all the physical postures of regular yoga.
"If you can laugh you get endorphins, feel stronger and can be more vibrant and you are getting all those benefits," said Gifford.
"The body doesn't know the difference between fake laughing and real laughing," she said.
So while it wouldn't matter if the laughter was all forced, in a room where everyone is laughing, it's hard for it not to became contagious.
"Last time we did it at the mall and people were looking at us like you're crazy, that makes you laugh even more," said Debi Cornell, from Glens Falls.
A silly exercise maybe, but one that's brightening people's days.
"You're free to be happy and peaceful," said Missy Gifford-Higley, Tobey's daughter.
"Maybe your eyes are still smiling if you can notice that," said Gifford.
So yes, maybe it's something we aren't used to seeing, but maybe that's the problem.
"Children laugh on average 400 times a day, adults it goes down to 17," said Gifford.
"I keep telling people they have to smile," said Jim Smith, from Glens Falls.
"We are given this gift to laugh. You can laugh when you're sad when you're happy and you'll feel better," said Gifford
A gift all these people are giving themselves and each other.
"Letting people just be themselves and not have any worries for a few minute," said Gifford.