NEW YORK (Reuters Life!) – Fitness loves company, whether it's a running buddy, a spotter in the weight room, or a pal to bolster your courage as you tackle that first yoga class.

Experts say buddying up can make your workout easier to stick with and harder to miss.

"People don't necessarily work out for social reasons, but that social factor can keep them working out," said Kerri O'Brien of Life Fitness, the equipment manufacturer.

"And stopping becomes more difficult when you have to overcome those social bonds."

Whether you're trying to lose weight or train for a marathon, O'Brien said sharing goals strengthens bonds, as well as resolve.

A national survey of 1,000 adult exercisers conducted by Life Fitness found that 27 percent of women prefer to work out with a friend.

"As with any new habit, if you have the opportunity to talk and make decisions with another person, you're more likely to stay with it," she said.

For Jessica Matthews of the American Council on Exercise, it's all about accountability.

"One of the perceived barriers to exercise is motivation: getting it there, getting it done," she said. "If you know someone's waiting on you, it might prompt you to exercise on a day when you would not if you were doing it solo."

Matthews said one place to find that workout partner is in a group fitness class.

"A lot of women who begin with group fitness classes evolve to working with a partner outside of class."

She's often seen women who go to the gym set up a little circuit among themselves, using dumbbells, resistance bands, and leg presses in rotation.

"And in the weight room you see men spotting one another, watching each other's form, giving constructive feedback," she said.

Adam David, owner of the Viva Vinyasa yoga studio in Manhattan, thinks there's nothing like a friend to put your workout in perspective. "When you're working with a friend there's a level of enthusiasm that's relaxing but productive," said David, a veteran yoga instructor.

"Your ambition is balanced with the sense of humor to realise that it's not that critical."

David said the desire to beg off is more easily expressed by his private clients.

"In a group no one's going to say that," he said. "The group environment doesn't indulge sloth."

O'Brien suggests finding a partner with the same goals and general level of ability, "so you're pushing each other, as opposed to one person pulling the other through the workout."