As people grow old it is quite normal for there heart to miss beats ,,, sometimes four times in a minute ,,, thus the rate is slower
Their heart rate should not go below 50 bpm. If it does they can suffer from weakness, fatigue, and even fainting. If it's below 50, get them to the Dr. Immediately.
Heart block and Hypothyroidism can be the cause of low pulse rates.
Heart block and Hypothyroidism can be the cause of low pulse rates.
Normally because of a lack of activity .
Non exercising
There are so many things like medications and illnesses you need to add more info to your question.
Since they turn all raisinish their heart has less room to beat.... So their pulse slows down