Amazing splits include push/pull, push/pull/legs, and upper/lower splits. These splits allow you to gain a sufficient enough weekly volume without destroying your muscles in one single workout like you do in say a bro split. Bro splits aren't typically great from a scientific perspective for this reason along with the fact you train a muscle group once every 7 days which, to our point about protein synthesis above, is inefficient. The best split is the one you're going to stick to.
