First of all, many girls will choose exercise to lose weight, but some boys may exercise to lose weight, but more people may exercise muscles to make themselves look fit. Therefore, if boys exercise, they may be more inclined to gain muscle, while if girls exercise, they may be more inclined to lose fat.
Secondly, girls are indeed worse than boys in all aspects of physical fitness, so girls' fitness programs may be soft and boys' fitness programs may be rough. For example, girls generally choose fitness programs such as body yoga, but boys may prefer to snatch barbells and exercise muscles.
Finally, even if girls and boys are in the same fitness program, the equipment may be lighter and smaller. After all, girls' weight base is relatively small, and too heavy fitness equipment may cause harm to girls' health. For a simple example, just like the common barbell, the general barbell will also distinguish between men and women. Mainly because women are physically weak, the weight of barbells is a burden for women.
At the same time, many women don't like to practice their arms like men, so they generally don't need a barbell with too high weight to exercise. But men are different. Men don't want their arms to be too thin. Generally, boys who go to the gym to practice their arms are trying to make their arms stronger, so that male girlfriends will feel more secure.