Calorie-Count About.com Health
Calories Burned for Activity: Sitting
Child Care, Only Active Periods

170 calories per hour

Assuming a body weight of: 150 lbs
This is equivalent to eating any of the lines of the following table.

Quantity Description Cals
0.7 Grande Starbucks Caffe Latte - Made with whole milk 260
0.2 McDonald's Big Mac - With cheese 704
2.2 Glasses of wine (3.5 fl oz) 79
0.6 Snickers Bar 273
0.8 Cans of Coca-Cola 207
5.7 Carrots 30