Hang Up And Listen

Josh Levin speaks with swim coach Terry Laughlin about what makes Katie Ledecky so fast in the water.  Plus, David Epstein of ProPublica talks about how 43-year-old gold-medal-winning cyclist Kristin Armstrong defies the sports age curve. Facebook: http://fb.com/HangUpAndListen Email: hangup@slate.com Show notes at http://slate.com/hangup Ending music by mtbrd http://mtbrd.bandcamp.com/ & Flamingosis https://flamingosis1.bandcamp.com/  Learn more about your ad choices. Visit megaphone.fm/adchoices