I don't know what your situation is, but for me it doesn't have to be strenuous cardio, my goal for every day is 10k steps. I work concerts and sporting events in the evenings and weekends as a side job so that usually keeps me active with walking around. I also work a full time government desk job, on my breaks I get outside and walk circles around the facility. I find that sometimes when I'm stagnant the "stinking thinking" sets in, it's during those times that prayer and meditation are so critical for my mental health and recovery. Any form of movement and a good diet also keeps the arthritis, inflammation, and lack of energy at bay.