u/TotalStatisticNoob

Hi, can someone update me on what is known about training muscles on back-to-back days?

As far as I remember, training a muscle group 2 days in a row just leads to the performance on the second day declining and the reduced volume also reduces the stimulus. But what if I only did 1 set on the first day and then the usual 4-5 sets on the next one?

I'm currently running a push(+quads)/pull(+hamstrings) split and I thought about adding of example 1 set of biceps on my push day. I don't think my performance the next pull day would be meaningfully different, as the biceps should quickly recover from a single set. And at the same time, 1 fresh set should be "worth" a lot more in terms of stimulus than adding a 6th set to my pull day.