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 present as stiffening of shoulder or upper back muscles that makes any activity difficult across the inflamed muscles due to intense pain (and sometimes swelling). The size of muscle knots may vary from the size of a resin to about the size of thumb depending upon the number of muscle fibers involved.