This is an old chestnut and it shouldn't be.
I am struggling to find a logical, workable way of getting my characters to breathe. I can sort of get it to work but it is not 100% and I am told the bones or target, or something are different. Breathing is not just the chest moving. Shoulders, and therefore head (this factor is missing in several tutorials), also move for deep breathing, but a morph only seems to control the whole body, you can’t have simple breathing of just the chest and then have the option to go heavy with a deep breath, it’s all or nothing. I think having the head move is possibly why the target is different, maybe... Please tell me I’m wrong and show me the way! It is extremely annoying and frustrating and especially galling as on the intro screen of iClone 8 it reads ‘Dramatically Simplify Character Animation.’

Breathing, like blinking, is fundamental to give life to a character and not  just to get breath but to draw in breathe before, and out after, speaking, to be breathless and gasping after running or fighting or…whatever. The problem should have been addressed years ago, and not by clever people like @4e2ges whose workaround should not have to be done by we mortals but by Reallusion; it, or similar,  should be part of the program. There should already be in place an automatic morph  ‘clone’ created with each project (live up to the name, guys!) and this could be python controlled or sliders. This clone, the LifeClone (?), would be purely there for the essentials like the various types of breathing, a menu of ready-mades could be on offer, and would, as now, have its own slot on the Timeline but not as 'morph'. Another essential it should have would be the constant fidgeting movement we do with our fingers. I noticed in CC4 and iC8 trailers examples of fab dancing but static fingers. Tut tut. With the amazingly useful, and for me indispensable, Hand Gesture Puppet currently not running I can well imagine more static fingers entering into projects and it really is not good.

Please put some breath into CC4/iC8 and, before that, tell me how to give life to my characters, there must be an updated, easier version of 4e2ges excellent tut!