eight diagrams pattern of Tai Chi

Purple and sweet potatoes are very rich in nutrients, containing a lot of sugar, protein, fat and various vitamins and minerals, as well as carotene and vitamin C. Japanese researchers have also recently discovered that purple sweet potatoes contain anti-cancer substances that inhibit the growth of cancer cells. The sweet potatoes we eat every day also contain this cancer-inhibiting substance.
Purple sweet potato (scientific name: Solanum tuberdsm) is also called black sweet potato, and its meat is purple to deep purple. In addition to the nutrients of ordinary sweet potatoes, it is also rich in selenium and anthocyanins. Anthocyanins have preventive and therapeutic effects on more than 100 diseases and are known as the seventh essential nutrient after water, protein, fat, carbohydrates, vitamins, and minerals. Anthocyanins are currently the most direct, effective and safest free radical scavenger found in the scientific community to prevent and treat diseases and maintain human health. Its ability to scavenge free radicals is 20 times that of vitamin C and 50 times that of vitamin E.
Yams are warm in nature and are a good warming food in winter. Yams contain digestive enzymes, which can promote the decomposition of protein and starch, promote metabolism and reduce excess fat; Yams can also supply the human body with a large amount of mucus protein, which can prevent fat deposition in the cardiovascular system, maintain the elasticity of blood vessels, and reduce subcutaneous Fat deposition to avoid obesity.

Eating yams, purple potatoes and sweet potatoes together is undoubtedly a nutritious meal in winter.