以healthy eating orexevcise为题写一篇英语作文,80词左右,

How to eat three meals a day?This question has now become our difficult problem.Why?Because our present condition is getting better and better,but eat more unhealthy,however,this is not a healthy diet will make our body becomes poor,weak,especially children,even a series of disease.Here,I'll give you recommend a most healthy diet idea.
Because children is lively good move,while the liver reserve of energy is limited,it is easy to generate a sense of hunger.So the children must eat three meals a day,to ensure that children grow up healthy.Eat breakfast like a king,children have to get up early,so that we can eat,eat breakfast is to pay attention to balanced nutrition; at noon to eat,eat more meat,eggs,vegetables and Steamed Rice,because this lunch need to provide the body an afternoon energy; dinner to eat less,food to eat light some,do not eat too much,otherwise it will add to the burden of gastrointestinal,and effects of sleep.
You know?What is the human body to absorb food nutrition?Now,I tell you!
The food after the initial refusal,into the stomach through the throat and esophagus,stomach,in further Daocheng paste "".Oral in chew food,gastrointestinal and pancreas can be secretion of digestive juice,swallow food group through the gastrointestinal peristalsis month digestive fluid and fully mixed.The food through the stomach muscle contraction in the past into the small intestine,small intestine and decompose them into can absorb nutrients.The nutrients in foods by small intestine after Shoufu,the rest of the food residue will be with the peristalsis of small intestine to the large intestine,large intestine absorption in the residue discharge water further.Finally,did not use the residue out of the body.
"Man is iron,rice is a steel,do not eat a meal hungry!" this saying is true!太长了，有短一点的吗？嗯The original meaning of "seeking nutrition for health", refers to human ingestion, digestion, absorption, utilization of nutrients in the food process to meet the body's physiological needs. (1) reasonable nutrition is refers through the cooking process reasonable diet and science, to the body to provide adequate energy and various nutrients, and keep the balance between the various nutrients, to meet the body's normal physiological needs, maintain human health and nutrition.