Breakfalls make me dizzy? Shock to the brain?? Parkinson´s disease???
you mean 40+ breakfalls an hour is bad? Wait a minute what´s this thread about again? Who are you people?? Who am I???
Now seriously, when uke commits to attack it has already blended with nage whether it likes it or not. Uke may lose balance (kuzushi) and thus can be lead to wherever nage wants, however uke should not lose all sense of direction (this can be bad for both).