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).
Regardless of the part of the body where ALS first makes an appearance, muscle weakness and atrophy eventually spread as the disease progresses. Later symptoms may include: 1  shortness of breath. 2  difficulty breathing. 3  difficulty swallowing.rogressive Symptoms of ALS. Regardless of the part of the body where ALS first makes an appearance, muscle weakness and atrophy eventually spread as the disease progresses. Later symptoms may include: 1  shortness of breath. 2  difficulty breathing. 3  difficulty swallowing. 4  difficulty chewing. 5  tight and stiff muscles.