I don't think an absolute beginner would be wise to do it...and really simply because they don't need different "modes" of training to see the same results. But anybody can do it if they schedule it right and their non-gym behaviour is good. It just needs to fit the purpose and be distributed properly and not just in the interest in doing more and more.
Olympic weightlifters quite often train twice or even more a day. And obviously it's common among serious athletes. There are lots of theoretcially good reasons to do it, in fact. But whether it workded would depend on lots of things just like whether once a day works
.
A quick example would be doing maximal work using many low rep sets in the morning and doing the same/similar type things for higher reps less sets in evening (at least 4 to 6 if not more hours later).
Hybrid Mode