Anyone still alive in this Manila heat?? In our bootcamp classes, we’re tending to run & jump rope less, and just let the heat index do our cardio work for us. It’s true, when the temperatures soar, especially in the face of high humidity, your body has to fight hard to stay cool during exercise. Obviously, that means it takes less overall work to generate the same heart rate than in cooler temps. This might be discouraging, except for the good news that you’re burning the same number of calories even considering this reduction in work output. Phew!…