In private, she pays great attention to the maintenance of her figure and sets aside some time for exercise every day. For example, she often works out in the gym, or does some yoga or aerial yoga, which are actually good ways to keep fit.
Besides paying great attention to exercise, she also pays great attention to the health of her diet. She won't eat too much greasy food, because sometimes it's easy to make herself fat, so diet control is also a way for her to keep fit.
As for her temperament, it is related to her own inner cultivation. If she does some yoga at ordinary times, it is actually very important to improve her personal temperament. Moreover, she also has many reading habits, so it is not difficult to understand that she has a good figure and good temperament.