When i saw my father (age 77) he was lethargic and none respocive , could make fist s and move arms ,face looked drawn but not sagging . After about 25 mn he was back to normal for him anyway . He told me that this has been happening to him after he has gone out to haul wood and get the mail. I am thinking its been going on for a while now . He has had cancer 10 years ago ,know he is getting older ,doesnt move around as well as he used to , has had leg trouble before also