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.
Resistance training, according to Dutta, is the best way to combat sarcopenia â the gradual loss of muscle mass that comes with aging. âYou begin losing skeletal muscle in your 30s,â Dutta says. âBy the time youâre about 50, you have approximately a 10 percent loss of muscle mass.