Interesting Pink Dolphin Facts For Kids | Amazon River Dolphin. 1  The Amazon River dolphins belong to the superfamily of Platanistoidea. 2  These dolphins spend most of their time in freshwater and their size can be greater than humans. 3  The length of the Amazon River dolphins measure around 1.53 â 2.4 meters (5.0 â 7.9 feet).
Causes of Back Muscle Spasms Video. A muscle spasm is the body's method of protecting injured structures, or as a means to protect itself from injury. Muscle spasms in the back can be caused by a muscle strain, a sprained muscle, or an underlying condition. 1  Tweet.2  Print.n treating back muscle spasms, it is very important to diagnose the underlying problem. The treatment should be directed at the underlying problem. Unless the underlying problem is evaluated, discovered, and treated, the back muscle spasms will tend to recur.
Quick Answer. Inner thigh cramps can be caused by straining or overusing a muscle; deficiencies of dietary minerals such as calcium; insufficient blood circulation in the muscles; and dehydration, according to MedlinePlus. Extended periods of intense exercise and physical labor can cause muscle cramps throughout the body, notes Mayo Clinic.