NERA mandates that a defendant serve 85% of the sentence "actually imposed" for certain crimes before becoming eligible for parole. N.J.S.A. 2C:43-7.2(b). Allowing defendants to proceed with a Rule 3:21-10(b)(2) motion prior to serving that 85% would circumvent the Legislature’s objectives and its approach to violent crimes. Moreover, the timing of defendant’s motion aside, he failed to meet his burden under Priester since he cannot prove the necessary devastating effect that incarceration had on his health, in addition to various other Priester factors.