( Stress ( ( produces ( ( ( adrenalin and ) endorphins ) ( which ( produce ( exhilaration ( to ( mask ( some ( of ( the stress ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NN Stress)) (VP (VBZ produces) (NP (NP (NN adrenalin) (CC and) (NNS endorphins)) (SBAR (WHNP (WDT which)) (S (VP (VBP produce) (ADJP (JJ exhilaration) (S (VP (TO to) (VP (VB mask) (NP (NP (DT some)) (PP (IN of) (NP (DT the) (NN stress))))))))))))) (. .)))
Stress produces adrenalin and endorphins which produce exhilaration to mask some of the stress.
(ROOT (S (NP (NNP Adrenalin)) (VP (VBZ is) (NP (NP (DT the) (NN hormone)) (VP (VBN produced) (PP (IN in) (NP (JJ high-stress) (NNS situations)))))) (. .)))