Revealed: Mark 'Doc' Renneker shares his secrets to lifelong fitness for big waves.
Watch the full interview on this channel.
Lessons on aging well — from 100+ conversations with endurance and adventure athletes
I send 1–2 emails a month with practical and reflective takeaways from conversations with runners, bikers, climbers, swimmers and other lifelong athletes — plus occasional personal notes from the road. Not just episode announcements.
