About the Bod Pod - useful links:
STEP 1: Operator enters subject information into computer.
   
STEP 2: Operator calibrates the BOD POD.
   
STEP 3:Operator weighs the subject.
   
STEP 4: Subject sits in the BOD POD for two 50-second measurements. If using a predicted lung volume, testing is now complete.

If measuring lung volume, proceed to Step 5.
   
STEP 5: Subject´s lung volume is measured using a breathing tube (takes about 15 secs.)
   
Testing is complete and results are printed.