Psychological and social factors are often powerful stimuli for drug and alcohol use. (theravive.com)
And one universal truth about human bodies of all shapes and sizes is that they are incredibly adaptive and require powerful stimulus in order for significant changes to happen. (fitnessandpower.com)
Because of this you get a more powerful stimulus to the muscles, which results in additional gains in strength and power over time. (whatreallybuildsmuscle.com)