According to research, leg strength is a major predictor of long-term survival after a heart attack. Individuals with better leg strength had a lower risk of mortality when compared to those with weaker leg muscles, according to studies.

from Times of India https://timesofindia.indiatimes.com/life-style/health-fitness/health-news/leg-workouts-can-protect-you-from-fatal-heart-attacks-read-how/articleshow/100645040.cms