Studies find that partnering up with friends and family — in the gym, on the courts, or for a hike — can increase your productivity and boost the fun factor. So shut down the solo act for a day and bond over fitness.

• Cellular connection: Thanks to modern technology, you don’t even have to be in the same state to reap the benefits of rambling and ambling with your favorite chum. While a face-to-face training session might summon competitive drive, you can still hold one another accountable over the phone. And you can go at your own pace while staying in touch.

• Meet and greet: If you can’t convince a colleague to join you for a hike or bike, sign up for a club like American Volkssport Association, where fellow fitness junkies gather to support and motivate one another out on the trail.

• Recreational activity: Exercise isn’t only about barbells and treadmills; you can get fit by just staying active. Ask a coworker or family member to go out for tennis instead of coffee. Or try dancing instead of a movie on your next date night. Skip the Friday night happy hour and gather a group for a game of Ultimate Frisbee®.