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Everyone has his or her own living habits. Keeping good living habits is important. Why are some habits better than others? Let’s find out.

●Why do we need to eat coarse grain?

Corn, sweet potato, soybean and oats are all coarse grains. Eating coarse grains is good for your health. They have a lot of dietary fiber (食用纤维). They are good for your digestion (消化). You can cook them in porridge or make drinks with them.

●Why shouldn’t we bend our heads for a long time?

Keeping your head bent down for long is not good for your neck. Why is that? It’s because you put too much pressure on your neck. It’s like putting two watermelons (about 27 kilograms) on your neck. You might have neck and shoulder pain by doing that.

●Why shouldn’t we rub (揉) our eyes?

Your hands are dirty. When you rub your eyes, the bacteria on your hands may go into your eyes. Your eyelashes (睫毛) might also break or fall off. If something gets in your eyes, do not rub them. Rinse (冲洗) them with cold water.

●Why is a cold-water bath after exercising bad? After exercising, your skin is sweating (流汗) and your heart is beating fast. A cold-water bath will stimulate (刺激) them too much. It might give you a cramp (抽筋) or headache. You’d better wait for a while until your body cools down. Then you can take a warm-water bath to relax.