I use the Comfort Zone stretches every morning and night. I’m a former professional dancer who suffered a lot of injuries in my youth–which lead to osteoarthritis. But I am not a sedentary person–I need to move, and move a LOT, in order to feel like myself. I’m also a fairly disciplined self-starter. The Comfort Zone stretches have really helped me identify areas of tension and patterns of holding in my knees (and hips and ankles and back!) and let go of them a little. I love these stretches. They’re well worth the minimal time and effort you have to put in to feel better. On “difficult” days.I do them as often as I have time for. They can be done almost anywhere you can sit down (like an office). Highly recommended.