Agreeing wholeheartedly about the benefits of using a rebounder, I would like 
to give a little warning though:
long time non exercisers ie couch potatoes would be wise to take it easy in the 
beginning.  Not every one would be able to start off with 3 minutes 3x per day. 
Rebounding has a profound effect on your lymph system, even the gentle bouncing 
where the feet don't even leave the mat.  As a beginner one might experience 
incredible fatique, nausea, or just feel totally off, and not even thinking of 
the rebounder being responsible.  The lymph starts moving, toxins begin to 
move, and although that's what we want to achieve, build up slowly.  Again, 
this is not happening to everyone but it does happen.  Start off with even only 
1 minute 2x or 3x per day, you might feel on clouds already after 30 secs, 
gentle bouncing and slowly build it up. Listen to your body!!

Happy bouncing


An example of the other benefits...I had been a couch potato for years
(programmer, designer, etc.)...I had no muscle tone...after the first 10 days of
rebounding gently for three minutes three times a day, my legs, calves, arms, 
etc.,