( ( ( Rigorous ( training activities ) ) ( as ( punishment ( for ( negative behaviors ) ) ) ) ) ( ( are ( more ( likely ( to ( ( ( ( decrease ( ( child 's ) interest ) ) ( in ( physical ( ( fitness and ) training ) ) ) ) , ) ( than ( to ( improve ( negative behaviors ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Rigorous) (NN training) (NNS activities)) (PP (IN as) (NP (NP (NN punishment)) (PP (IN for) (NP (JJ negative) (NNS behaviors)))))) (VP (VBP are) (ADJP (RBR more) (JJ likely) (S (VP (TO to) (VP (VB decrease) (NP (NP (NN child) (POS 's)) (NN interest)) (PP (IN in) (NP (JJ physical) (NN fitness) (CC and) (NN training))) (, ,) (SBAR (IN than) (S (VP (TO to) (VP (VB improve) (NP (JJ negative) (NNS behaviors))))))))))) (. .)))
Rigorous training activities as punishment for negative behaviors are more likely to decrease child's interest in physical fitness and training, than to improve negative behaviors.
(ROOT (S (NP (NP (NN Smoking) (NN tobaccowould)) (ADJP (RBS most) (JJ likely))) (VP (VBP have) (NP (NP (DT a) (JJ negative) (NN impact)) (PP (IN on) (NP (NP (DT the) (NN ability)) (PP (IN of) (NP (DT an) (ADJP (JJ individual) (S (VP (TO to) (VP (VB succeed) (PP (IN at) (NP (JJ physical) (NNS activities))) (SBAR (IN because) (S (NP (PRP it)) (NP (PRP it)))))))) (NNP decreases) (NN stamina) (CC and) (JJ cardiovascular) (NN efficiency))))))) (. .)))
Smoking tobaccowould  most likely have a negative impact on the ability of an individual to succeed at physical activities because it it decreases stamina and cardiovascular efficiency.