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at least 8 hours.
keep a good diet.
diet
(1)Eat more vegetables
less
oily
(2)Don't eat too much sweet or oily food.
Second,
and less meat.
(3)Drink tea or water,not coke or coffee .
more
less
sweet food
oily food
drink tea or water
not coke or coffee
√
×
take plenty of exercise.
Third,
smile
the most important thing is
Finally,
to be happy
(1) never worry too much
(2) have a smile on the face
even
That's why, even at 80, his hair is still black and not white.
ing
Answer the questions: