In this rare condition, when muscle cells break down, they can overwhelm the kidneys.

Rachel Apa was just 24 years old when she collapsed during a marathon run in New York City and died. Her sudden death left everyone shocked, and now her father has claimed that she passed away from rhabdomyolysis. For those unfamiliar, Rachel ran her first-ever marathon on November 1, 2026, when she collapsed two miles from the finish line.