If an outdoor runner develops a headache, feels tired, and has an elevated heart rate, what is the most probable cause?
a. lack of protein
b. dehydration
c. overhydration
d. insufficient calories

If an outdoor runner develops a headache, feels tired, and has an elevated heart rate, the most probable cause is Dehydration. The answer is letter B. Because while exercising, you are sweating a lot and your body excretes water. The more you excretes water, the more dehydrated you become and so you need water to replenish dehydration.

by going smokefree, you could improve the well-being of your friends, family, coworkers, and even your pets. here’s how the cigarettes you smoke affect the people around you.