You never know the time.
I was "perfectly healthy" other than high blood pressure (which I've had for 30 years and controlled with meds), biking 18 miles a day, walking two miles every evening, lifting weights, working on the garden, etc. Blood work was always good or at worst, borderline.
Right up to my emergency by-pass surgery.
Just because you are relatively young and appear in good health, you never know...
Just glad to still be here.