During the launch of the Apollo 16 mission, Charles Duke had a heartbeat of 144. It’s an absolutely natural response to the sensation of 7.5 million pounds of thrust lifting 95 tons into orbit. John Young was commander of the mission. His heart rate was 70. When asked about this he simply replied in an even voice:

    “Yeah, well mine was too
     old to go any faster.”

The above is a quotation from https://medium.com/@room_n/john-young-the-astronaut-fe2c1076... which was submitted to HN some 9 months ago and got no attention. There have been a couple of other submissions[0] about Capt Young's passing, but I remember the way T.K.Mattingly, Tom Stafford, and Charlie Duke all spoke of him. They all considered him one of the best they'd ever worked or flown with.

As Scott Kelly said: Fair winds and following seas, Captain.