Laughter, which is present in many kinds of playful activities, releases those same feel-good hormones. The act of simply laughing with others will also foster a sense of camaraderie and strengthen your relationships, too.

At work, play increases your productivity levels and makes you more creative. In fact, in their book "Welcome to Your Child’s Brain: How the Mind Grows from Conception to College," Dr. Sam Wang and Dr. Sandra Aamodt discuss how play contributes to successful problem solving, not just at work, but in your personal life, too. "Work in adult life is often most effective when it resembles play. Indeed, total immersion in an activity often indicates that the activity is intensely enjoyable; this is the concept of flow, or what athletes call being in the zone," they wrote. "Flow occurs during active experiences that require concentration but are also highly practiced, where the goals and boundaries are clear but leave room for creativity. This describes many adult hobbies, from skiing to music, as well as careers like surgery and computer programming."

Finally, as you age, play (especially the social and group kinds) facilitates happiness, wards off depression, improves cognitive health and lowers your risk of developing age-related diseases like dementia.

What exactly counts as ‘play’?

So you’re convinced that you could benefit from adding play back into your weekly routine. But what exactly does play look like for adults?

Think of play as more of a mental approach to activities, not necessarily the particular activities themselves. In fact, you don’t really need to worry about if an activity constitutes as play or not, as long as you adopt a playful mindset and of course, have fun, while you’re partaking. It could be taking part in your favorite sport, playing a board game with your family, solving sudoku puzzles on the commute to work, swimming with friends, taking an exercise class or cooking a new recipe.

Being happy, relaxed, free, feeling like time is flowing, not constantly checking your watch — those things signify that you are in play mode.

What feels like play to you may not to the next person, and that’s okay. (A friend may love playing volleyball at the beach, while you, on the other hand, see it as self-inflicted torture.) “The definition of play connotes voluntariness and vulnerability. It’s anything you feel like doing without being made or forced to,” explains play expert, creative strategist and toy designer Yesim Kunter. Kunter develops play experiences and applies play philosophy to spaces, environments and communities, She also trains organizations to leverage creativity and innovation through play workshops. “Being happy, relaxed, free, feeling like time is flowing, not constantly checking your watch — those things signify that you are in play mode.”

Clinical psychologist and chief of the Division of Psychology at Ellis Hospital, Dr. Rudy Nydegger, says there are two basic tenets of play. “First, it is something that we do for recreation that is purely for enjoyment and/or entertainment — it is something we do just for fun," he says. "Second, it is something that is intrinsically motivating. In other words it is something that we want to do and is not something we need to be coerced or 'bribed' into doing. It is voluntary; we do it just because we want to.”

How to Incorporate Play into Your Life

You can either carve out a special time for play, such as planning a weekend activity with friends, finishing a crossword puzzle every night before bed or heading out for daily morning runs. Or you can also decide to incorporate play into regular tasks that are already on your to-do list: like doodling while you’re on a conference call at work or singing and dancing in the shower or while you clean.

Because most adults spend the bulk of their waking hours at the office, making sure you experience some type of play there is crucial. “A lot of offices are sterile and ‘unplayful,’ so it could be simple and subtle playful things like using colorful pens on your tables or having posters with nice inspirational quotes on your desk wall,” Kunter explains. “And if your office allows it, playing a board game for just 15 minutes with your colleagues is a great way to play and refresh yourself during office hours.”

Here are five ways Kunter says you can easily incorporate play into your office space: