Some fitness centers in the United States have reopened after lengthy closures meant to slow the spread of the coronavirus. But the centers, also known as gyms, have established several operational changes in an effort to keep members safe. While the changes look different across states and cities, there are a few basic ideas that most gyms are using. One of the biggest changes is the creation of more space between workout machines. In addition, gyms are reducing class sizes, cleaning equipment more often and using touchless entry - a way of entering doors without having to touch anything. Some gyms are requiring members to request limited workout times so equipment can be deep cleaned after each use throughout the day. Still, some say going to the gym is risky. As the country reopens, even some of the most dedicated exercisers are concerned about returning.