You can block it. The unit won't heat or cool that room anymore though. The return air does effect supply air temp. And heat pump efficiency. With a 60 degree return air temp, the heat pump is more efficient then with a 70 degree return air temp.
We are simply getting contaminated causing otherwise healthy folks to lose the function of their kidneys and for a senior citizen who is already suffering sarcopenia this can be a death sentence because of the complexities associated with Renal Failure.
Sarcopenia is not a disease or a syndrome, and it is not always even a medical sign, because the degree to which it is normal (physiologic) versus abnormal (pathologic) is not determined.As of 2009 there is no generally accepted definition of sarcopenia in the medical literature.uring sarcopenia, there is a decrease in type 2 fiber circumference (Type II), with little to no decrease in type I fiber circumference (Type I), and deinervated type 2 fibers are often converted to type 1 fibers by reinnervation by slow type 1 fiber motor nerves.