▁tor so ▁or ▁slightly ▁more ▁vertical . ▁During ▁the ▁first ▁pull , ▁the ▁lif ter ▁begins ▁to ▁ex ert ▁force ▁on ▁the ▁bar , ▁separ ating ▁the ▁weight ▁from ▁the ▁platform . ▁ ▁Second ▁phase ▁The ▁second ▁phase ▁of ▁the ▁pull , ▁or ▁" pre lim inary ▁acceleration " ▁begins ▁with ▁the ▁weight ▁separated ▁from ▁the ▁floor . ▁ ▁In ▁the ▁second ▁phase , ▁the ▁lif ter ▁begins ▁by ▁extending ▁the ▁kne e ▁and ▁moving ▁the ▁hip ▁up ward ▁while ▁maintain ing ▁a ▁constant ▁back ▁angle ▁relative ▁to ▁the ▁floor . ▁ ▁During ▁this ▁phase , ▁the ▁lif ter ▁pull s ▁the ▁bar ▁closer ▁to ▁his ▁ ▁body ▁and ▁the ▁center ▁of ▁gravity ▁of ▁the ▁lif ter ▁sh ifts ▁toward ▁the ▁he el . ▁During ▁this ▁phase , ▁the ▁lif ter ▁begins ▁to ▁acceler ate ▁the ▁bar ▁and ▁towards ▁the ▁end ▁of ▁the ▁phase , ▁the ▁tor so ▁begins ▁to ▁assume ▁a ▁more ▁vertical ▁position . ▁ ▁Third ▁phase ▁During ▁the ▁third ▁phase , ▁or ▁" ad just ment ▁phase ", ▁the ▁lif ter ▁begins ▁to ▁position ▁his ▁body ▁appropri ately ▁for ▁the ▁final ▁explos ive ▁pull . ▁ ▁The ▁kne es ▁typically ▁perform ▁a ▁" double ▁kne e ▁b end ", ▁where ▁the ▁kne e ▁b ends ▁ ▁from ▁the ▁previous ▁extension ▁of ▁the ▁kne e ▁during ▁the ▁second ▁phase , ▁and ▁the ▁tor so ▁continues ▁to ▁become ▁more ▁vertical . ▁ ▁During ▁this ▁phase , ▁the ▁lif ter ▁doesn ' t ▁apply ▁as ▁great ▁a ▁force ▁on ▁the ▁bar ▁as ▁in