Over the past week, I've been taking an early morning walk of about 2.5 km and I'll gradually increase this distance or maybe go for an afternoon walk as well. I think a reasonable weight for me would be about 68 kg. I was definitely too thin when I was hovering around the 64 kg mark some years ago.
I'm also thinking of buying a sphygmomanometer to measure my own blood pressure but also my wife's. Her sister, a couple of years younger than her, died recently of a stroke after suffering from high blood pressure for a number of years. She was overweight however, unlike my wife but it will still be a good idea to monitor it.
I also want to start measuring a resting pulse as that's a good indicator of increasing fitness. I could also measure it at the start and finish of a walk. Right now, sitting here and typing this post, it is 69 beats per minute, which is OK. I can record all these details in the Samsung Health app on my Android phone.
Meanwhile I perform my hip-strengthening and flexibility exercises on a daily basis but of course I could do a lot more. One thing at a time however. For the moment, I'll focus on increasing the distances that I walk and monitoring my weight. I know from experience that walking is the easiest way for me to lose weight.