Astronaut Shannon Lucid exercises on a treadmill which has been assembled in the Russian Mir space station Base Block module.
NASA/JSC/Unknown
<a rel="nofollow" class="external text" href="http://dayton.hq.nasa.gov/IMAGES/LARGE/GPN-2000-001034.jpg">Great Images in NASA</a> <a rel="nofollow" class="external text" href="http://grin.hq.nasa.gov/ABSTRACTS/GPN-2000-001034.html">Description</a>