Best Answer: Your heart rate should be at about 50-60% of your maximum. Your maximum is 200 so it should be between 100 and 120, maybe slightly higher or lower depending on your pace and level of fitness. The average time to briskly walk a mile is anywhere between 13 and 20 minutes.Source(s):Summer Â· 6 years ago.est Answer: Your heart rate should be at about 50-60% of your maximum. Your maximum is 200 so it should be between 100 and 120, maybe slightly higher or lower depending on your pace and level of fitness. The average time to briskly walk a mile is anywhere between 13 and 20 minutes. Source(s): Summer Â· 6 years ago.
The symptoms of smallpox are much more severe (e.g., high fever, muscle aches) than those of chickenpox, and the entire rash associated with smallpox evolves at the same rate â from all the lesions being papules to all becoming vesicles, to all becoming pustules at the same time.
Pneumonic plague symptoms may appear as quickly as one day after exposure to the bacteria and include: 1  trouble breathing. 2  chest pain. 3  cough. 4  fever. 5  headache. 6  overall weakness. 7  bloody sputum (saliva and mucus or pus from the lungs).