Try to get in at least 10,000 steps a day. It's easier and harder than you think. But the benefits are dramatic.
If you include 30 to 40 minutes of brisk walking three or four times a week, plus a light free-weight. You will essentially be physically fit.
You can essentially accomplish this anywhere. Even indoors. Or with a portable lightweight treadmill\walker. I have an app on my phone that counts my steps.
My phone is always in my pocket or hand. Sometimes I turn on airplane mode. But it still counts my steps. From this solid base you can always add additional things. Like going to the gym etc..💜😊