Pushing power with out breaker popping

[rlowerr_1]

After returning from IRI everything I was thinking about can be summed up into one simple question. How are some teams pushing so hard and for so long with their robots with out tripping breakers?

All you have to do is watch the finals. For about half of the match it is just a pushing/shoving frenzy. Then when the match is over the refs/announcer tell us about how the motors smell and are smoking. I understand that the top teams are using multiple motors and low gear ratios. But even so that does not allow you to get into a pushing stalemate and not pop breakers.

Any incite would be greatly appreciated.