You may want to research something called the Melt Method
. It's basically a new twist on Trager bodywork - which uses gentle rocking movement, light pressure and stretching to relax the body's connective tissue. The only tools used are some soft rubber balls and one of those 3' long x 6" diameter cylindrical foam 'rollers'.
I tried some of the exercises today and it definitely releases body tension and feels great.
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As many others stated - walking - probably the best exercise you can do for your body.