Answer:
acquired immuno deficiency syndrome
The technique in having a flat stomach or not getting bloated is in choosing what you eat. You only have to eat food that are rich in fiber and drink water as much as your body need. You also have to limit food that are rich in sodium, most likely these are the salty food that you eat.
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I believe it is the 3rd option
Ages 6 through 17 years should do 60 minutes (1 hour) or more of moderate-to-vigorous physical activity daily.
