The entire MS community is promoting the importance of regular exercise to help your MS. This is physical, mental & social.
I have given talks attended by people who are in chairs or walkers. They claim they cannot exercise until I break out a can of soup & necktie. They can raise their arms & do curls with the soup while watching TV.
The necktie can be used to stretch the legs even if they cant lift their legs, they can use their arms to lift their legs. The key is: Move your muscles! The other thing is I usually have people stand up & stretch their arms. I do these things throughout the day. You must never over do it or over exert yourself or cause pain.
Enjoy your day,