Scroll way down to the bottom of the Hot One Hundred top breeders and youll eventually find the United States, hovering just at replacement rate with 2.07 births per woman.
Most of the time, no apparent cause for night leg cramps can be identified. In general, night leg cramps are likely to be related to muscle fatigue and nerve problems. The risk of having night leg cramps increases with age. Pregnant women also have a higher likelihood of having night leg cramps. Several conditions, such as kidney failure and diabetic nerve damage, are known to cause night leg cramps. But if you have one of these, you're most likely aware of it and have symptoms other than night leg cramps.
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.