Answer: Pretty sure oxygen i think not exactly sure but i think it is
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Answer:
Target heart rate is generally expressed as a percentage (usually between 50 percent and 85 percent) of your maximum safe heart rate. The maximum rate is based on your age, as subtracted from 220. At an 85 percent level of exertion, your target would be 145 beats per minute.
Answer:
Zika is spread mostly by the bite of an infected Aedes species mosquit. Zika virus directly infects brain cells and evades immune system detection. Zika virus disease is generally mild, and severe disease requiring hospitalization and deaths are uncommon.
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