The CoreCooling is something really special. When I used it during several heat-trainings in The Netherlands, the advantages surprised me. What I noticed most is that I could remain my focus; therefore I was not distracted and could remain concentrated on my performance. And, even more important, compared to using cold water & ice, when using the CoreCooling I could deliver much more power, more easily and for a longer time.

Now at Kona, I have done several running sessions as preparation for the IM World Championship race. I have been running (in Energy Lab) at sub3 pace, 4.13 min/km on several days and I saw my Core temperature increase to 39.6  39.6°C (103.3°F) with an average heart-rate of 173 bpm. The distances I ran varied from 9 to 12 KM.

When I did the same training, but now for 16 KM, while using Core Cooling (arm-sleeves, head-band and base-layer, using cold water and ice), my Core temperature did not go higher then 38.5°C (101.3°F)and my average heart-rate was 155. So the CoreCooling gives me a 18 bpm lower heart-rate and 1.1 °C (2.0°F) lower core temperature!

Good stuff that CoreCooling!

My Kona IM World Championship race experience: it was my first Kona race, and man, what did I suffer, I never experienced so much pain! I used the arm-sleeves and base-layer during the race. It did help me with good cooling and relief against the heat. But triathlon is not only about core temperature and in this case the pain in my legs just was too much, but I could finish.

With the experiences of CoreCooling, I will keep using it, without any doubt.