There was a devout nun in the XVth century who decided
to make a pilgrimage to Jerusalem; and she belonged
to an order that wore bags over their heads.
And the mother superior told the nun that if she walked
through the countryside with a bag on her head,
she would scare people. But the nun insisted,
so the mother superior allowed to her to walk around
and around the cloister, every day for three years
until she covered the equivalent distance to the Holy
City. At the end of her journey the nun was so exhausted
that she collapsed. A doctor was called.
After examining her he announced that she was too weak
to make the return trip. The nun died shortly after.