She’ll be dead in 5 years. The human heart was not meant for such abuse. It’s a muscle. It hardens like a worked muscle. Needs to stay supple. Stupid idea. She may as well smoke 2 packs a day.
You stupid ass
I recall reading that running a marathon can do acute harm to the heart, requiring a recovery period. Running a marathon daily cannot be good for longevity. But at least she’ll die with a record.
Sprinting is much better for health than marathons. Ever compare a sprinter’s body to one who does long-distance running?