Relax for the same result (2015)
The idea makes sense for work, but I don't buy that biking leisurely makes you move the same speed. What made the biggest difference for me was training, and the author maybe got faster from all the hard riding before testing the easy riding.I also used to ride that Santa Monica path all the time, and there are some tight turns with sand on the path. Maybe biking hard then wasting energy braking on those turns negatively impacted the time, but idk, there aren't enough of those turns to make a big difference.