CAUTION: If you have had or need spine surgery, some of these are not for you! In fact all of them need to be shared with a doctor, and then with the very finest Physical Therapist in your county. (Not everyone with initials is good at what he does, I've learned the hard way.)
Be sure to add the whole link into your browser.
http://www.iofbonehealth.org/exercise-recommendations#Recommended%20exercises%20for%20patients%20with%20 osteoporosis ::
And with all the advice we get on line, I was delighted to find a section on
EXERCISES NOT SUITABLE FOR PEOPLE WITH OSTEOPOROSIS
Of course, curling up tighter on the sofa is also not recommended for us bone people. And here I am doing the other bad habit - leaning toward the laptop screen instead of moving the chair closer.
I wish you health.