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Howie examines the energy content of the diet of a polar explorer. Normally, a man needs about 12,000 kJ of food energy per day but Dave, the polar explorer, needs 27,000 kJ to drag a heavy sledge and keep warm in freezing conditions. Howie’s lunch has 800 kJ per 100g. However, Dave needs 2,700 kJ per 100g to keep the total weight to under 100kg.
This clip is from:
First broadcast:
18 May 2007

Classroom Ideas

Use this clip to discuss what we eat each day and how much energy it contains. Discuss the positives and negatives of certain high energy foods. Relate the ideas of calorie consumption and activity and have students carry out calculations involving how many additional calories would be used in carrying out different activities.

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