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.
However, here are nine possible suspects: 1  Dehydration. Not staying hydrated with enough water during the day may be one of the big causes of leg cramps at night. 2  Overuse of the muscles, perhaps from exercising, gardening or other physical activities. 3  Night leg cramps during pregnancy affect about 30% of women.