Rehabing my knees

The past week I have been using my exercise bike to rehab an injury. I started with 20 minute routines. As each day passed my pain in my knees improved. That is easily 2000 steps since I started at an easy pace. Added to it is a bunch a short walks again thinking of the range of motion. Moving helps my body heal and keeps me ready to walk. As I heal I will increase the intensity and minutes. One fellow I know swims for fitness. Running, walking, cycling, swimming are all good. Using a timer and watching TV helps with indoor biking.
My old guy workout of push ups, sit ups, squats, and resistant bands helps too. Gentle stretches a must. Stretching the hamstrings and quads and giving my self 6 weeks to recover. The bike takes the impact out of it and works on range of motion. Have an injury check in with your doctor and be patient. Keep walking