Turns out a gym partner is good for much more than just playing medicine ball catch. A recent study showed that gym-goers who worked out with motivated virtual partners stuck with tough aerobic exercises longer than those who sweat it out alone. The study proves what most of us already knew: hitting the gym with a friend (especially one who’s unlikely to call it quits) makes for a more effective workout.

Do it Today: This afternoon, bring a partner to the gym for a tougher workout. The friendly competition will make both of you work a little harder.

Tag Team:

What if everyone could be workout buddies? That’s the idea behind a new, High 5 Running Club.

Snack Time:

Why eating with friends is good for health, too.