Caloric intake and weight gain across weeks of access to SCM. A, Mean (±SE) kilocalories (kcal) consumed in the 2 h access period across weeks for rats in the control, continuous-access, or restricted-access groups. Caloric intake was higher for rats with restricted access to the SCM compared with either those with continuous access to SCM or to control rats receiving only chow. Rats with continuous access to SCM consumed more kilocalories in the access period than controls. B, Mean weight gain (in grams; ±SE) per week across weeks of access to SCM. The continuous-access group gained more weight than controls or the restricted-access group, which did not differ from each other. N = 12 per group.