No on both. My boys take Karate classes, and their instructor teaches a Tai Chi class that I attend twice a week. Thursday mornings it is usually just me in the class, so we use that class for me to work out. During my Thursday morning work outs my instructor has me working with a system call TRX Rings/Suspension. I can't use them like they are suppose to because both of my feet are disabled to a degree. So my instructor had to think out of the box and developed excerises for me to do either by sitting in a chair or sitting on the ground.