Don't worry, rowing machine is very suitable for girls to practice, not big and round. But pay attention to the standard of action when practicing. It is suggested to look at the specific words of technical video action. 1/ Start to stretch your arms forward, with your upper body leaning forward, your knees bent and your calves vertical. 2/ Push your legs back. In this process, the upper body keeps the initial forward posture and the arms keep straight. 3/ After the legs are straight, the upper body leans back slightly, and the arms are retracted and pulled to the position below the ribs. 4/ Restore, straighten your arms forward, and finally bend your knees back to the original position. It is estimated that the subject mainly wants to practice aerobics, so as long as the stroke rate is kept at18-22s/m for more than 30 minutes, the resistance is 4-5 (the resistance value is about 1 10). If it is kept at 20s/m, a complete action takes about 3 seconds, that is, step 1-3 is completed within1second, and the rest time is restored to the starting position. The pace mainly depends on the strength and speed of the rear drive. More important than leg strength. Moreover, rowers mainly exert their strength on the hips and legs, which is also very helpful for girls' hips. I am female, 168cm 52kg, and my personal test is valid.