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.
Why your legs cramp at night and how to keep it from happening again. Leg cramps at night â nocturnal leg cramps â are pains that occur during the sleeping hours. They can cause a person to wake up and occur at night due to prolonged hours of inactivity. Nocturnal leg cramps commonly occur in the calf but can also cause pain in the thighs and feet.