Background: The 600 Military Training Instructors (MTIs) in the US Air Force are tasked with the demanding and crucial responsibility of providing entry-level military training to 35,000 trainees annually. Previous studies have observed that time pressure and workload associated with being an MTI is linked to less healthy behaviors. The current study explores differences in health behaviors between MTIs (i.e., have at least 12 months job experience) and MTI students (i.e., in the first 6 months of job training) in order to assess how MTIs exposed to more time in a very demanding position compare to their less experienced peers. Method: The sample consists of 343 MTIs who completed surveys as part of a mandatory annual behavioral health visit. Health behaviors included physical activity (IPAQ-SF, high level of physical activity vs. low/moderate), sleep-related impairment (PROMIS 4 a, < median vs. ≥ median), past-year binge drinking (yes vs. no), food choice quality (exceptional/excellent/very good/good vs. fair/poor/very poor), and food portion control quality (exceptional/excellent/very good/good vs. fair/poor/very poor). Logistic regression models assessed the association between MTI status (experienced vs. trainee) and each healthy behavior, adjusted for demographic variables (gender, race/ethnicity, rank, and relationship status). A health behavior composite score was also created by summing each health behavior (possible scores 0-5). Total number of healthy behaviors was compared by MTI status using X. Results: Just over half of the sample were MTIs (52%). Compared to MTI students, MTIs were less likely to: engage in high levels of physical activity (OR = 0.42, p = .007, 95% CI [0.23, 0.78]), have a sleep impairment score below the median (OR = 0.51, p = .01, 95% CI [0.31, 0.86]), to report good food portion control (OR = 0.37, p = .003, 95% CI [0.19, 0.72]), and to report good quality food choices (OR = 0.52, p = .057, 95% CI [0.26, 1.02]). There were no differences in binge drinking by MTI status (OR = 0.89, p = .73, 95% CI [0.45, 1.76]). MTIs had lower health behavior composite scores (B = -0.57, SE = 0.15, p < .001). Discussion: Findings indicate that more experienced MTIs exhibit poorer health-related behaviors then MTI students. Future research exploring reasons for these differences is needed. Likewise, findings suggest that preventive efforts, particularly addressing sleep, physical activity, and nutrition, may result in a healthier MTI corps.