group of people exercising outdoors in the evening

group of people exercising outdoors in the evening. They are performing abdominal exercises on a concrete surface in front of a large, illuminated sign that reads "Canet de Mar." The sky is a deep blue, indicating it is dusk or early evening. There are a few benches visible on the side, and the foreground shows some grass or vegetation. The people are generally wearing dark clothing and are spread out across the area in front of the sign. There appears to be some kind of instruction or count being given, possibly by someone leading the exercise.