I have a progressive disease and was having a flare-up and needed training on muscles that were not working as well as they used to. I had a hard time walking with my left leg dropping. Doing the light speed got me concentrating on my walking form and targeting the muscles I need to strengthen. It gave me the courage to keep walking without fear of falling. Listen to your therapist. Power through and listen to your body. Take everything they teach you and use it in your everyday life. Thank you, Nicole and Martha!