This study is examining the roles that past behaviour, attitudes, self-esteem, control and normative beliefs have on the gym attendance of women (N=67), and on different gym models. The predictor variables are past behaviour, the measures of subjective norms, perceived behavioural control, and attitudes are taken from the Theory of planned Behaviour and self-esteem is using the Rosenberg Self-esteem questionnaire. The criterion variable is the intention to attend a single-sex gyms or a traditional (unisex model) gym. There was no significant difference between the groups attendance but a significant difference with attendance and self esteem. There was a strongly significant relationship (p<0.0 1) between PBC with intention to attend and an also significant relationship (p<0.05) between the intention with attitude and self-esteem.