Abraham lived to be 175 years old. 25:7
Genesis Chapter 25 verses 6 to 9
6But unto the sons of the concubines, which Abraham had, Abraham gave gifts, and sent them away from Isaac his son, while he yet lived, eastward, unto the east country.
7And these are the days of the years of Abraham’s life which he lived, an hundred threescore and fifteen years.
8Then Abraham gave up the ghost, and died in a good old age, an old man, and full of years; and was gathered to his people.
9And his sons Isaac and Ishmael buried him in the cave of Machpelah, in the field of Ephron the son of Zohar the Hittite, which is before Mamre;
So Abraham lived to be nearly 200 years old, many thousands of years ago, where today we barely live to 100. Whats the secret? Even the most holy and righteous of people in this world dont make it to 100. So that cant be it. Oh, I get it. You have to witness God , cause your hair to turn grey, then be responsible for the saving of 1000s of Isrealites, and lead them into the desert.