Hold it as long as you can.
( ( ( Hold it ) ( ( as long ) ( as ( you can ) ) ) ) . )
(ROOT (S (VP (VB Hold) (NP (PRP it)) (ADVP (ADVP (RB as) (RB long)) (SBAR (IN as) (S (NP (PRP you)) (VP (MD can)))))) (. .)))
Hold on for as much time as you can possibly hold on for.
( ( ( ( Hold on ) ( for ( as ( much time ) ) ) ) ( as ( you ( ( can possibly ) ( ( hold on ) for ) ) ) ) ) . )
(ROOT (S (VP (VB Hold) (PRT (RP on)) (PP (IN for) (PP (IN as) (NP (JJ much) (NN time)))) (SBAR (IN as) (S (NP (PRP you)) (VP (MD can) (ADVP (RB possibly)) (VP (VB hold) (PRT (RP on)) (PP (IN for))))))) (. .)))