He could make sure he exercises regularly to keep the blood flow pumping to his heart, he can eat healthy so that he does not have a lot of fat build up in his arteries and he can also stay away from smoking to keep his body functioning properly.
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Straightens D: I think six
Answer:
They could go on hikes!
Explanation:
Hiking or exploring their backyards together would be the perfect way to study plants and animals while also exercising.
You'll be stretching your back more so the muscles will get stronger
