&quot;Aging&quot; is what costs you flexibility and speed. If you reverse aging, you&#x27;ll maintain your flexibility and speed.<p>Moreover, aren&#x27;t you assuming that we couldn&#x27;t possibly manage loss of flexibility? Even if most people are inflexible because they&#x27;ve aged, this doesn&#x27;t prohibit them from having a base level of flexibility and thus find a workaround for whatever limitation you&#x27;re imagining this imposes.