This study found resistance training significantly increased resting metabolism at 12-hrs post-workout and this effect continued for at least 21-hours. Other studies have shown increases for up to 38-hours after a workout! While this increase is statistically significant, most people will realistically only burn an extra 10-15 calories per hour so it’s not a great excuse for a massive cheat meal after every workout.
Reference: Greer, B. K., Sirithienthad, P., Moffatt, R. J., Marcello, R. T., & Panton, L. B. (2015). EPOC comparison between isocaloric bouts of steady-state aerobic, intermittent aerobic, and resistance training. Research Quarterly for Exercise and Sport, 86(2), 190-195.