Second, try not to breathe in through your mouth directly when running, because of the cold air directly into the abdominal cavity, easy to catch a cold, have a stomachache, so should be shut up.

其次，跑步时尽量不要用嘴直接吸气，因为冷空气直接进入腹腔，容易着凉，肚子疼，所以应闭上嘴才好。

youdao

When you catch a cold, you have received a virus from someone else. Viruses live in the tiny little droplets that someone with a cold sneezes out.

感冒是因为你感染了别人的病毒，感冒的人打出喷嚏，病毒就存活在其中的微小液滴中。

youdao

And you have to know that when Intel and Seagate sneeze, Microsoft is going to catch a cold.

FORBES: Microsoft: With PC Demand Weak, Estimates Start To Slip