Consistent workout throughout the day Vs. Normal regimen

I wanted to get your guys opinion, about the effectivity of a workout.

if I train instead of 1-2 hours a day at once, reps every 30 minutes.

Which one would yield a better result? So let’s say, just as an example.

400 Push-Ups at once Vs. 20 every 30 minutes over a 10 hour period.

I’m more interested in the technicality than actually doing it, wondering about the science and if the body favour consistent pressure to sudden exposure. Hope I make sense.