Some of these hot, humid days we've had have reminded me of the importance of adjusting your routine in extreme weather. Your body takes about two weeks to adjust to excessive heat combined with high humidity. This means you may have tailor down your intensity on these days and remember to drink about 10 oz of water before your workout and drink to replace sweat afterwards or as you go (i.e., for everyone ounce of bodyweight lost, drink 1 oz of water). Just remember that exercising in high heat and humidity can lead to heat exhaustion or even heat stroke in some cases. Some common signs of heat exhaustion would include headache, undue fatigue, cramps, and nausea. So just remember to take it easy those first couple of workouts in the heat and your body will begin to adjust, and don't forget to drink water and cool down after the workout.