Just a few things to add: I currently live in a very hot AND humid environment. I have lived in a very hot and dry environment. The middle east.


Hot and dry, lets say 115 degrees is hot, but not near as bad or dangerous as 100 degrees and 80% humidity. Dry heat = evaporation and heat loss. Wet heat there is no evaporation and heat loss. You die faster.

Anything above a dew point of 65 and your screwed. It really doesn't matter how you train. It's all bad. Below that point you have a lot of wiggle room and you can adjust your training accordingly.

Finally...I can attest to using a Core. The thing simply works.