Originally Posted by
caloso
You know what’s really inefficient? Having your foot come off the pedal unexpectedly.
After I broke my ankle several years ago, I had to use flat pedals (spikey ones with 5/10s work quite well), but I realized I couldn't stand up to climb on hills without the fear of having a foot come off, and it was really holding me back.
One minor thing I noticed is that flat pedals with spikes gives you considerably
less float than SPDs.