<human>: Give me a shortened version of the text

A colleague came to me 3 weeks ago and said, "Your kid changed the trajectory of my life."  You see, my son was diagnosed with leukemia in March.  This colleague watched us go through initial appointments, diagnosis, induction, failures, and finally remission (leukemia goes into remission easily, keeping it in remission is the hard part. He has another year of intensive chemo and then another 3 years of treatment.)  

I had noticed that my colleague had been losing weight.  But what he told me next... well... "I've watched you go through all of this with your son.  It occurred to me one night that you and your husband would give anything, even your own lives, to have health in your family, and here I am squandering it away. I was at boot camp in the park the very next morning."  It hit me like a ton of bricks.  So my entire family (mom, sister, husband, and several friends) all downloaded MyFitnessPal and started Couch to 5k programs (both recommendations from this incredible subreddit!  Thanks!).  We're just getting started, but all have seen success in the last two weeks.  Mostly for us it is about TRACKING!  

So now for my question!  We are in the hospital every other week, for a week. I've worked out our food issues (ice chest and smart snacking in the room).  When we're home, I walk or jog.  But when we're here, I can't leave his room.  

I need low-impact exercises that I can do in a small space.  Thoughts?
<bot>: Health is not to be squandered. How do I exercise with little space, no privacy, no equipment, but plenty of time?