New research shows that when it comes to building intimacy as a couple, it's not only important to plan time alone together, it's also important to try new things. That's because when we try something new and exciting, happy chemicals like dopamine and norepinephrine flood our brains, the same chemicals that give you that butterflies-in-the-tummy feeling when love is brand new.

Recent studies have shown that when couples try something new together that they both enjoy, they report more satisfaction in their marriage than people who do the same activities over and over again. New activities may include taking a class together, or trying a new sport like skiing or hiking. Researchers theorize that it's the boost in brain chemicals that allow spouses to feel some of those "puppy love" feelings that inevitably fade over the years.

I've no idea if trying a new restaurant will make your heart beat faster this Valentine's Day, but getting out and being active as a couple is certain to boost your physical health and it may even bring you closer together.