Because humans have five senses: feel, see, taste, hear, and smell. When you step on a nail you basically going to feel it and you brain can sense that and it can trigger nerves which can cause pain.
Where's the choices?? But anyways cardio has to do directly with the heart and it's pace if I do crunches that is NOT cardio respiratory it's neither cardio respiratory hope this helps
Answer:
1-2 hours of exercise is good, but if you have trouble breathing i suggest you start excercising like for 1 hour a day, then slowly increase your workout so your body won‘t tire itself out.
Eating a good healthy diet is always best, especially if you are looking to feeling better healthwise, or looking to lose weight. An unhealthy meal a day wont hurt, but maybe try to keep a clean diet so that not all you are eating is junk food.
How much a human has to sleep is approximately 8 hours a night. If you are young i say you should sleep at least 10 hours a night for your body to Keep growing.
Hope this helps. :)
Explanation:
This is very good information thanks
