I can&#x27;t imagine why you would need a cloned body.  With the level of technology needed to make that work, you should just be able to rejuvenate the one you already have.  The body is already self-repairing, the problem is that the aging process makes this mechanism faulty.  That can be fixed.  If your cells can easily grow and multiply from a zygote into a mature adult, there&#x27;s no reason you can&#x27;t fix the flaws which prevent total rejuvenation.  It might require nanites though.  But that still sounds easier than a brain transplant and then manipulating the brain to learn like a 5yo again.