After becoming a full-time actor, Sisley rarely eats regular meals and eats takeaway lunchbox for lunch most of the time. To supplement dietary fibre and other nutrients, she consumes plenty of vegetables. She also opts for light-flavoured vermicelli and noodles in soup at times. Besides, Sisley likes to try different kinds of healthy dishes.

Moreover, Sisley has been practising ballet, swimming and long distance running since she was very young. Apart from sneaking exercise into her busy schedule, she also tries to fit physical activities into her everyday life, such as taking the stairs, getting off the public transport one stop earlier to walk the rest of the way, etc. She also does some stretching at breaks between filming sessions to relax her mind.

Her fondness of physical activity has inspired her father to take up sports. “My father used to take me to training sessions and bring me back. Rather than just waiting for me to finish, he followed me to run and gradually developed a liking for it.”