Aerial silks at brown seems like play too, that's once a week near my house.
Of course, bjj is play too, it was near my dorm and where I found love for my community.
Walking is a very underrated exercise too. You can do it anywhere, and if it takes you to new surroundings use it for inspiration and contemplation.
I also enjoy just running a treadmill now- it still can be exhilarating once you get past the initial mundane start up minute
Roller blading or cycling on a sunny day is a great way to explore the city you live in.
Hiking is a great way to enjoy nature’s beauty while burning calories.
Swimming is a full body work out that always feels like fun.
If you’re looking for more cardio and a full body work out, boxing and/or kickboxing are both great ways to release stress and improve stamina. In one 45 minute to 1 hour session you can burn up to as many as 800 calories!