- On the rare occasions when they went outside, crew members had to first request approval from ‘Ground Control’ and wear spacesuits while exploring the volcano’s Mars-like landscape.
- They were only allowed to eat the same dried food as astronauts and all communications were on a 20 minute delay to simulate the delay in transmission as a result of the vast distance between earth and Mars.
- They were only allowed to use a solar-powered treadmill on sunny days and showering was restriced to just six minutes a week to conserve precious water.
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