Check out that off-set stance - it generates an uneven torque - slipping the front foot causes severe damage to the front leg, and sometimes results in very serious crashes.

Curbrider Flow Pedals - Pronunciation [kurb-rahy-der floh ped-ls]: A device that allows bicycles to move along as though in a stream circulating among transitioned surfaces which are used to accelerate.

Flow Pedals for cross training

Taking repeated transitions with an offset stance results in uneven wear and tear on ankles, knees, hips, and back. Cross-train with Flow Pedals to counteract this effect.

Crashes from slipping pedals are very common, but made worse when the front-foot slips first (see image caption).