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.
Nighttime Leg Cramps: Meds That Hurt, Meds That Help. Nocturnal leg cramps are a common cause of pain in the legs that can disrupt sleep. They are present in nearly 50 percent of those over the age of 50. Leg cramps are characterized by sudden muscle tightness, most commonly in the foot, thigh, or calf, that may last from seconds to minutes.