They can live for as long as five years. The young are born hairless and helpless, and their eyes do not open until about 18 days after birth. They typically become sexually mature after the end of their first hibernation.hey can live for as long as five years. The young are born hairless and helpless, and their eyes do not open until about 18 days after birth. They typically become sexually mature after the end of their first hibernation.
A muscle knot is the lay term for what are also known as trigger points, sometimes abbreviated as TrP. These are sensitive points all over your body, but mostly on the back and neck that are particularly sensitive to irritation.
Muscle knots, also referred to as myofascial trigger points, are described as abnormal areas in the muscle, according to Seth Rosenbaum, M.D. Muscle knots often form when the muscle is experiencing a spasm. A muscle spasm occurs when a muscle is in a continuous contraction and typically follows an injury.t is characterized by having ongoing painful trigger points, or muscle knots, according to the MayoClinic.com. This pain tends to worsen or persist. Trigger point injections, physical therapy and medications can help to alleviate the pain and muscle knots.