While not the gambling type, I am willing to bet my favorite pair of Lululemon leggings that fitness is not the first thing to come to mind when considering ways to keep the spark alive with your significant other.
Fitness as a means to strengthen romantic bonds didn’t occur to me either until I started digging into relationship research upon the celebration of my 30th wedding anniversary this month.
Looking back over the years prompted the deep dive when I realized there was a pattern to my favorite memories with my husband – hiking, biking, kayaking, running. Our family vacations always included physical activity. We’ve hiked all over Jefferson County and southern Missouri.
My husband and I have trained for and run two half-marathons and countless 5K races together. We still run together once a week (albeit at a much slower pace than in our younger, racing days). I’ve even talked him into taking swing dance lessons in recent years. All this reminiscing led me to wonder – perhaps investing in your relationship, like investing in your health, requires a little sweat equity.
Decades of relationship research suggests that couples who sweat together really do stay together. A 2026 study led by researchers at Brigham Young University found that couples who frequently engage in fitness activity together report significantly better communication, more effective conflict resolution and lower levels of marital stress compared to couples who don’t work out together. And it doesn’t take high intensity exercise to reap these benefits. The study noted that walking was the most frequently reported shared activity. That’s totally doable – simple daily walks are an extremely accessible way for couples to connect, talk without distraction and decompress.
A study published in the Journal of Social and Personal Relationships found that partners reported higher positive mood during exercise, greater overall positive mood the rest of the day and higher daily relationship satisfaction when working out together compared to when exercising alone. The science behind this mood boost is known as the “endorphin feedback loop.” Exercise releases endorphins, dopamine and adrenaline. When you experience this cocktail of feel-good chemicals in the presence of your partner, your brain attributes these positive feelings and physical sensations of excitement to your loved one, enhancing emotional and physical attraction. You’re essentially leveraging biology to keep the flame alive.
Joint workouts can also harness the power of nonverbal synchronization in which feelings of closeness and connection are intensified due to physical mimicry. Synchronized movements, whether it’s matching run paces, falling into the same walking stride or rhythmically lifting weights, increase feelings of closeness and connection. This nonverbal matching builds the nonverbal connection that leads to a deep, subconscious sense of bonding and trust.
In addition to the biology behind these bonding effects, your relationship will also benefit due to simply spending this quality time together and working toward a shared goal. The sense of shared accomplishment and teamwork that you experience during the workout carries over into everyday life, better equipping you to handle life’s challenges and stressors together. Now, there is one caveat to ensure a successful fitness partnership. Remember that your roles are that of teammates, not trainers. Nothing turns a fun couples’ workout into a domestic dispute faster than unsolicited critiques. Unless you’re a personal trainer being paid by your spouse, resist the urge to lecture your partner on their squat depth or pushup form. Ditch the coach’s hat and stick to encouragement as you keep each other accountable and work toward your fitness goals.
Not every workout needs to be a team effort or the most vigorous fitness session of your life. Moving side by side during a mutually enjoyable physical activity at least once a week is a surprisingly powerful tool for keeping your bodies and your connection strong. If your idea of quality time with your spouse consists of sitting on opposite ends of the couch while staring at separate screens, it might be time to get your sweat on. Framing fitness as a shared hobby is an opportunity to trade day-to-day stress for a little shared laughter, a bit of friendly competition and a healthier life together.
Rebecca Bishop is executive director of the Jefferson County YMCA.