When your brain says you can't, you're at just 40%: Ello

Professional ultrarunner Ello said on the podcast, quoting David Goggins, that when the brain says you can't go on, you're only at 40%. "There's always more in yourself...It's just your brain tells you no," he said. Asked how to tell mental limits from physical ones, Ello said, "Wake up and still do that work...Who else will?"