This tone theory is really interesting
I couldnt ever train the day before a race.
A training session the day before a meet that counts is never the same as a regular training session. I usually either do just warmup, some drills and a couple of accelerations, or go to the weightroom and do 1-2 exercises for 3-4 sets at 50-75% of the usual weights I use, with focus on speed, mostly snatch and high box squat.