Not a fan of jogging? Don’t sweat it. Research shows that while aerobic exercise spikes arousal levels for about 15 to 45 minutes post-workout, there may be an even more effective way to heat things up: A 30-minute strength training workout can keep you in the mood for up to 90 minutes, says Tierney Lorenz, PhD, a post-doctoral research fellow at the Kinsey Institute at Indiana University. It takes longer for strength training workouts to activate your nervous system, but once it’s activated, it stays that way for a longer period of time. Another interesting piece of information that confirms runners have great sex: The Brooks survey also asked if “pre-race relations” improved running performance—about 35% of respondents think it does. And when asked what kind of undies they liked to run in, more than half of the women chose regular old briefs… but there were still a few who’d rather go commando! Looking for other surprising ways to turn up the heat this Valentine’s Day? We’ve got you covered.