Because of these significant associations between exercise, a positive outlook, and longevity, it’s more apparent than ever that emotional and physical health go hand in hand. “This study reaffirms that exercise can affect attitude, leveling the playing field between positive and negative patients,” explains Barry Cohen, MD, medical director of the Cardiac Catheterization Lab at Morristown Medical Center in Morristown, NJ. While mood and exercise influence each other, the reasons are unclear (it’s similar to the ‘chicken and egg’ story—which came first?). But outlook and exercise definitely exist on one continuum: the better your physical health, the better your emotional health and vice versa. Here are some ways to keep your mojo up: Say Namaste. Meditation or yoga promote deep breathing that can strengthen the mind-body connection. Focusing on a sound or word as you meditate or stretch may decrease stress and lower blood pressure.  Let nature nurture. People are generally happier when walking or biking in the fresh air, with the sun and wind in their faces. Find a positive posse. Shun negativity whenever you can, whether it’s a friend who’s constantly complaining or bad news coming from the TV. Stick with the happy crowd—and it’ll definitely rub off on you. Joke around. Yup—chuckling is good for you. “Laughter relaxes muscles and releases tension, causing physiological changes that have been compared to a mild workout” says Cynthia Thaik, MD, a cardiologist in Los Angeles and author of Your Vibrant Heart. More from Prevention: Your Healthiest Heart