New Year, new you for 2022. Yes, that is about as overused as anything else these days. If you are though, seriously, looking to improve your fitness here in the new year it really doesn't have to cost you a lot.
I know that going for a walk with your dog is by far a healthy thing for you to do for yourself; but it is also great for your dog. You both get to go outside in the environment. You both get some much needed exercise.