Muscle cramps result from an involuntary contraction of a skeletal muscle. Overuse, prolonged exercise without proper conditioning, and fatigue are common causes of muscle cramps. In addition, dehydration and depletion of electrolytes, including magnesium, calcium and potassium, can lead to muscle cramps.
The relationship between intelligent design and science has been a contentious one. Intelligent design (ID) is presented by its proponents as science and claims to offer an alternative to evolution.
Though the phrase intelligent design had featured previously in theological discussions of the design argument, the first publication of the term intelligent design in its present use as an alternative term for creationism was in Of Pandas and People, a 1989 textbook intended for high school biology classes.