<span>Alternating between running and walking is important, especially if you're not a professional runner. You should be walking from time to time to recover a bit from the strain that the running put on you, but not too much or your body starts to cool down and then you have to work all over again or you might lose energy.</span>
<span>The virus can be transmitted through contact with infected blood, semen, or vaginal fluids .Within a few weeks of HIV infection, flu-like symptoms such as fever, sore throat, and fatigue can occur. Then the disease is usually does not show symptoms until it become to AIDS. AIDS symptoms include weight loss, fever or night sweats, fatigue, and constant infections.</span>
High self esteem i believe it makes the most sense
Parasitism, that should be the correct answer for this question!