If we could be 100% certain of weather three weeks in advance, we would be rich. I use this site for averages: http://weather.msn.com/daily_averages.aspx?wealocations=wc:CHXX0116&q=Shanghai%2c+CHN+forecast:averagesd&weai=3. For long range forecasts I use accuweather.com.
Cross-Country Skiing Burns More. Burning about 381 calories in 60 minutes of snowboarding provides a slower caloric burn than some other forms of winter exercise. A 160-pound person burns about 533 calories in an hour of slow-paced cross-country skiing and about 419 calories in 60 minutes of light ice skating. The caloric burn from light snowboarding is equivalent to that of light downhill skiing. Related Reading: How to Estimate the Total Calories You Burned While Running.
How to take it: Juven comes unflavored (70 calories) and flavored (80 calories). Juven is designed to be taken 2x a day and it comes in powder packets. You can mix 1 packet with 8 fluid ounces of water and ingest as a drink or mix it with your favorite beverage or food (this will obviously add calories).