View of astronaut Shannon Lucid exercising on a treadmill which has been assembled in the Mir space station Base Block module. Beside her with a flight data file is her replacement, astronaut John Blaha (019). STS-79 mission commander William Readdy joins Lucid while she exercises on the treadmill (020). Mir 22 commander Valeri Korzun (foreground) prepares to operate the Russian short wave radio while Lucid exercises on the treadmill in the background (021-2).
