Bok choy of the Daily Value, DV) of vitamin A (30% DV), vitamin C (54% DV) and vitamin K (44% DV), while providing folate, vitamin B6 and calcium in moderate amounts (10–17% DV) (table). Chinese cabbage was ranked #2 for nutrient density out of 41 nutrient-rich plant foods. Bok choy contains glucosinolates. These compounds have been reported to prevent cancer in small doses, but, like many substances, can be toxic to humans in large doses, particularly to people who are already seriously ill. In 2009, an elderly diabetic woman who had been consuming 1 to 1.5 kg of raw bok choy per
Choy Li Fut forms in the Choy Li Fut system as a whole, it is not required to learn every form to complete training in Choy Li Fut. As the Choy Li Fut system spread, different schools and branches added other martial arts masters to their curriculum, adding new forms or modifying some form techniques. This dissemination and evolution of Choy Li Fut resulted in the variations of forms and practices we see between schools and branches. Having both Northern and Southern Chinese influences gives Choy Li Fut a wide variety of weapons in its arsenal. Originally, there were 40 weapons in the