You are stranded on a barren desert island. There is plenty of pure fresh water but no food. It is sunny and warm, and there are caves present to provide shelter and protection. There is not food available either plant or animal.

Describe what you will feel like after the first few days, after one week, and after 3 weeks.

If you weighed 100 pounds before you went to the island, how much would you weigh after one week?

Two weeks?

Three weeks?

Where is the energy coming from that your body depends upon?

Even though there is sun, water and air present, why do you continue to lose weight? How long can you go before your health is seriously in danger?