Heat training is a great way to help your body become accustomed to running in hot, humid weather. It's important to start heat training early on so that you can make sure your body has enough time to adjust before race day. Heat training should begin at least 4-6 weeks prior to your event and should be done gradually with incremental increases in intensity and duration over those weeks. Start by doing some light jogging or walking for 15 minutes outside when it's cooler out such as early morning or evening hours and slowly increase the duration of your workouts each week until you're up around an hour per session. You'll also want to consider increasing the temperature of where you train for example if you normally run outdoors switch it up one day and do a treadmill workout indoors instead; this will give your body more practice acclimating itself in hotter conditions. Finally, remember that proper hydration is essential during any exercise routine so make sure you are drinking plenty of fluids before, during, and after each heat session!