According to the chapter, what is stated about "are usually mild and" in Fitness And Wellness?
○ Some people become infected but don't develop any symptoms and dont't feel unwell.
These symptoms are usually mild and begin gradually.
○ When children exercise, their fitness needs are met, and build up energy to learn and achieve.
○ Some patients may have aches and pains, nasal congestion, runny nose, sore throat or diarrhea.
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This matches the chapter's stated information about "are usually mild and". — Examisthan.com