On all takeoffs my feet are right up ready.
I thought a recent Boeing document recommended pilots should be Go-minded rather than REJECT minded - due to the propensity of pilots to abort unnecessarily. The general rule in the 737 FCTM was to use 80 knots as a trigger to stopping for any master caution. In that case why have your feet "ready" on the brakes when there is no problem with pulling up.
Above 80 knots the advice is to keep on going depending on the problem and in any case that is why the RTO is installed on most modern jet transports. It is the instinctive reaction at high speed where an unnecessary abort becomes dangerous if the statistics are to be believed. Keep your toes on the bottom of the rudder pedals and your heels on the floor has served the test of time
