【参考范文】
The chart illustrates clearly how citizens in a certain city do physical exercises. As is revealed in the graph, large proportions of citizens work out alone or with friends, accounting for 54.3% and 47.7% respectively. In contrast, only 23.9% of residents stretch their muscles with family members, and the figure is even lower for people who engage in group workouts.
There exist several factors that may have contributed to these results. In the first place, growing competition in the job market pushes people to work longer hours, leaving less time for their family members. This partly explains why citizens seldom work out with their parents or children. In the second place, people nowadays are well aware of the importance of fitness. A multitude of people try to squeeze some exercise into their busy schedules. Some of them are lucky enough to have a training partner while exercising, but many more have to work out alone.
Taking all these factors into consideration, we can reach a safe conclusion that the number of people doing exercises will continue to grow in the forthcoming days, although many of them have to endure solitude during the process.