The least likely explanation for this would be that they're training at different intervals, or one is training harder than the other.
The most likely reason is that the way the other person's genetics are most people cant gain muscle as well as others because of disease or their body structure.
Hope this helped!
A. Speed
Amphetamine, a stimulant, is commonly reffered to as 'Speed'
Answer:
The cardiovascular system maintains homeostasis through the circulation of blood and, therefore, oxygen and nutrients to organs and tissues.
Explanation:
It is true! Contaminated groundwater is very difficult and sometimes impossible to purify!
