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@betougallThere is information on the web now and this link has some info and this activity in Fitbit's manual activities approximates the calories as per the data on the Internet
Skiing, cross country, hard snow, uphill, maximum, snow mountaineering
http://www.huffingtonpost.com/2013/10/23/crossfit-endurance-effect_n_4145011.html
and this link
http://creationbasedhealth.com/crossfit-calories-burned/
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