If you could teleport anywhere in the world at any time, but each time you do so, you lose a month off the end of your life, would you? If so, how many times?
My answer would be "No" unless no-brainer constraints apply (e.g., perfect certainty that the month reduction in lifespan will be limited to time lived in debility).
Edit:
The amount of cardio and strength training I do is a direct reflection of what scares me about what I saw my parents and grandparents become from my age onwards. The jury remains out if it will actually mean a difference for me. Regardless of the age, if I’m not longer capable of taking care of myself or being able to do the things I want to do than I think it might be better just to be dead. I see no point in existing for the sake existing if I already know it won’t make me happy.
Using one's own family members to predict one's own lifespan can be fraught with problems. Take this example from my family history, featuring two sisters who married two brothers, so the three children from each marriage were double first cousins of the offspring from the other marriage:
* Generation 1 (the parents of each couple): ages at death of 86 (pneumonia), 48 (cancer), 75 (congestive heart failure), 98 (gangrene of left leg and foot)
* Generation 2 (Kansas side, mine): ages at death of 62 (pulmonary embolism), 92 (self-starving in nursing home after five years with fractured hip)
* Generation 2 (Texas side): ages at death of 58 (heart attack), 72 (diabetes and heart attack)
* Generation 3 (Kansas side): ages at death of 81 (sudden cardiac death), 92 (sudden cardiac death), and 69 (stroke)
* Generation 3 (Texas side): ages at death of 51, 46, and 44 (all heart attacks)
For the third generation, that's a startling difference in average age of death between the Kansas and Texas sides--80 versus 47--despite their all having had the same grandparents (average age of death of 77). The difference for the second generation--77 versus 65--is also pretty large.
In terms of senescence, the distaff line that ends with my grandmother gives an idea of how quality of life can change with advances in medicine:
* About 1821-1920, died aged 98 of "senile decay," was not living independently at the end
* 1852-1951, died aged 98 after spending eight years with a fractured hip, was boarded with a nursing care provider from probably 1947 onward
* 1890-1982, died aged 92, spent five years with a fractured hip and was in a nursing home (the classic 1970's horror complete with old-age stink) for nearly all of that time (my grandmother suspected the two fractures resulted from bone embrittlement due to lack of Vitamin E)
* 1919-2011, died aged 92, was living independently in her own home; had just driven to the grocery store and gotten out of her parked car when she collapsed