What is a calorie Emma Bryce

View full lesson: We hear about calories all the time: How many calories are in this cookie How many are burned by doing 100 jumping jacks, or longdistance running, or fidgeting But what is a calorie, really And how many of them do we actually need Emma Bryce explains how a few different factors should go into determining the recommended amount for each person. Lesson by Emma Bryce, animation by Qa ed Mai.