My boss passed away this year, 58, died of a massive heart attack in his sleep. He was fit, a vegetarian, exercised, ran, jogged, mountain bike rider in the Santa Cruz Mtns, etc. It came as quite a shock.
.
>> “ He was fit, a vegetarian, exercised, ran, jogged, mountain bike rider in the Santa Cruz Mtns” <<
You describe the typical mid life heart attack victim.