From a very good site….
He focused particularly on the martyrdom of St John Houghton, Prior of the London Charterhouse, who was cut down from the scaffold while still alive and had his body ripped open. Henry VIII had insisted that the Carthusians were to be executed in their habits and St John still had his hair shirt on, which proved a problem for the executioners trying to hack through it.
His heart was torn out while he was still alive and St John said "Sweet Jesus! What will you do with my heart?"
We may see these days again.