I’m 85. My doc says I’ll live to be 100.
5’2 118 lb woman who has taken a dozen nutritional supplements every morning for 50 years cuz I read the right books back then.
I love the gym, lift weights and did a mile on the treadmill, every morning until idiot idiot guv closed the gyms for covid. Slowly struggling to get back in shape. Muscular strength is best indicator of living long life.
I also sleep 8 - 10 hours every night. Always have.
I probably should have mentioned a rather big effect.
You gotta choose your parents well. 40% is likely genetic.