of course, it will be possible. it will start with a primitive genealogy sort of document, a personal or family history. That is inevitable in our lifetime. it will become our individual blockchain that weaves and conjoins and breaks with other's blockchain (relationships). Eventually, you will be able to record proximity to one another, creating a more fluid blockchain history. all of this on top of some blockchain that may or may not be available today. eventually, you will be able to record simple statements of emotion ("I am soooo happy!" or "I hate my life"), as we already have that on something like a facebook, where you can record your superficial personality. and we have the private world, something like fitbit or apple watch, where we can track our personal health. As you can, today, send your heartbeat to someone via apple watch, you can send it to the blockchain. there is a case for keeping record of your personal health on a block chain over your lifetime. which brings me to ... 4-5 generations from the first health blockchain, the rudimentary anals of your life to a living blockchain that will record a myriad of body functions and emotions. there is currently a gadget on the market that is intended for emotionally challenged people (read autism) that collects their information and helps them cope. it's not on a block chain, yet.
let's flip the page. if we accept that we are living in an Orwellian world, decentralized or not, someone will use this personal, historical blockchain as a means of control and oppression. It will be easy to use for criminal persecution and sentient tracking. so we can argue the merits and needs of such blockchain but to the question of whether you can send an emotion or body function to it, to me, a newbie in this forum, is an obvious yes