Images from inside a gym in Seoul this week, where Covid restrictions have been brought in that include limiting the beats per minute of songs during group exercises and applying a maximum 6 kilometres an hour (3.7 mph) speed limit on treadmills. "As you can see, most of them are listening to their own music by using their earphones," said one student at a gym in the capital. "So I don't think it's practical." IMAGES AND SOUNDBITES