What happens during a heart attack? How long is the window before permanent damage begins to occur in the heart’s tissues? Here, Lon Kilgore, Ph.D., describes the series of events that follow a complete or partial blockage. He also discusses innovative research into how high-intensity exercise might harness the body’s healing processes to create an infarction-resistant heart.
Read MoreThe Heart, Part 11: Myocardial Remodeling and SalvageNever Give In
The hardest test in CrossFit Games history begins in nine days. Ten athletes — five women and five men — will face an unknown number of challenges as they seek to prove themselves as the Fittest on Earth.