Naturalist definition, a person who studies or is an expert in natural history, especially a zoologist or botanist. See more.
Nighttime leg cramps are a sudden intense pain in the thigh or calf. A cramp is a tight muscle that won't relax. They can be caused by mineral deficiency.
Not staying hydrated with enough water during the day may be one of the big causes of leg cramps at night. This is most likely due to fluid imbalances of electrolytes (mainly sodium, potassium, calcium, and magnesium). Overuse of the muscles, perhaps from exercising, gardening or other physical activities.