Which is why you do some of your laps in zoomers. The flip side is swimming without them feels like kicking air, you need to alternate fins & no-fins sets to work the muscles and tempo resp. It's also why swim fins are so small -- plus, turning in large fins sucks and when you push off the wall in open-heel ones they try to come off and then bounce back with a boinc.
Nope. I bike to work weather permitting on a big cheap mtb. Standing up to go over curbs, cracks, and occasional step of ten. No proper racing pedal stroke there.
Still, unless your pedal clips to your shoelaces and you're pushing it forward parallel to the ground, I really don't see how it's working the same muscles the same way. That is not to say riding a bike won't condition your legs for using fins while diving and anyway what's any of this got to do with gatorage?

---------- Post added May 24th, 2015 at 01:43 PM ----------