People get Chicken pox just by contact. It is a contagious disease in other words, an air borne disease.
Answer:
I think imma go with 1) Neurological development
When you exercise outdoors, there is a more natural connection between you and the environment. You may also be motivated to change some things in the environment if you exercise in a polluted environment.
The normal potassium level in the blood is 3.5-5.0 milliEquivalents per liter (mEq/L). Potassium levels between 5.1 mEq/L to 6.0 mEq/L are considered to be mild hyperkalemia. Potassium levels of 6.1 mEq/L to 7.0 mEq/L are moderate hyperkalemia, and levels above 7 mEq/L reflect severe hyperkalemia.
