The great white shark is very well known for its size, with the  largest individuals known to have approached or exceeded 6 metres  (20 ft) in length and 2,268 kilograms (5,000 lb) in weight. It  reaches maturity at around 15 years of age and can have a life span  of over 30 years.
Benign fasciculation syndrome is characterized by occasional or nearly continuous twitching of various skeletal (voluntary) muscles in the body. This type of muscle twitching can also be seen in association with serious disorders like spinal injury, multiple sclerosis (MS) or amyotrophic lateral sclerosis (ALS).
Some people with ALS wonder if the presence of muscle twitching means they have a bad or fast-moving version of the disease. In fact, having fasciculations doesn't correlate with how rapidly the disease progresses.ome people with ALS wonder if the presence of muscle twitching means they have a bad or fast-moving version of the disease. In fact, having fasciculations doesn't correlate with how rapidly the disease progresses.