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.
The nature vs. nurture debate, which may also be called the genetic vs. environmental debate, is an argument over the effects that genes have on the personalities of individuals compared to the effects that the environment has on personality traits.he nature vs. nurture debate, which may also be called the genetic vs. environmental debate, is an argument over the effects that genes have on the personalities of individuals compared to the effects that the environment has on personality traits.