( Research ( ( has ( proven ( that ( ( our metabolism ) ( ( ( ( ( shifts , ) or ) ( ( ( ( cycles ( ( back and ) forth ) ) , ) ( from anabolic ) ) ( to catabolic ) ) ) , ) ( depending ( on ( ( ( which type ) ( of reactions ) ) ( may ( be ( dominant ( in ( ( the body ) ( at ( that time ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Research)) (VP (VBZ has) (VP (VBN proven) (SBAR (IN that) (S (NP (PRP$ our) (NN metabolism)) (VP (VP (VBZ shifts)) (, ,) (CC or) (VP (VBD cycles) (ADVP (RB back) (CC and) (RB forth)) (, ,) (PP (IN from) (NP (NN anabolic))) (PP (TO to) (NP (NN catabolic)))) (, ,) (PP (VBG depending) (PP (IN on) (SBAR (WHNP (WHNP (WDT which) (NN type)) (PP (IN of) (NP (NNS reactions)))) (S (VP (MD may) (VP (VB be) (ADJP (JJ dominant) (PP (IN in) (NP (NP (DT the) (NN body)) (PP (IN at) (NP (DT that) (NN time))))))))))))))))) (. .)))
Research has proven that our metabolism shifts, or cycles back and forth, from anabolic to catabolic, depending on which type of reactions may be dominant in the body at that time.
(ROOT (S (NP (NNP Metabolism)) (VP (VBZ includes) (NP (ADJP (DT both) (JJ anabolic) (CC and) (JJ catabolic)) (NNS reactions))) (. .)))