Please go immediately to a hospital or call 911. You may be fine, but you need to rule out serious issues.
Vigorous physical activity.
fluid can build up in and around his lungs making it hard for him to breathe
It is hard to breathe when you laugh out loud because you used most of you breathe to laugh as hard as you did. Try to get someone to make you laugh. Then see how long it takes you to catch your breathe...
because its hard to breathe thin air above earths surface, the higher you go its hard to breathe oxygen.
Alcohol is very bad for your lungs as it can cause heart diseases, and you will find it very hard to breathe. It will forbid you to breathe, and your lungs will soon turn black, so then, you will die.
It is very hard to breathe underwater without assistance from an air tank.
If you are bipolar, don't risk taking allegra. I went to the hospital hardly able to breathe, my heart pounding fast and hard, breaking out in a sweat. It was not a heart attack.
you would choke and find it hard to breathe.
It means that every part of him feels as if it weighs five times as much as it does when he's sitting still on Earth. That makes it hard to breathe or to lift a finger.
because the air is thinner the higher the altitude is.
Hard to take in air
when i have a cold, it is hard for me to breathe. i don't have much energy. why do you think this happen