Theory: Man could run 40mph

Dis is gettin stupider and more stupider…

But how about this for a set today:

400m training

350m in 41sec
8mins rest
320m in 41sec
8min rest
300m in 41sec
.
NOTE: THIS TOPIC (400M TRAINING) HAS BEEN MOVED TO THE “LACTATE THRESHOLD” THREAD UNDER FUNDAMENTALS