Ive never been a techno-geek, however this is no longer true; I am completely smitten with the Apple watch4. I got it to monitor my heart (ECG & BPM)...I've just begun to see a cardiologist and their tests often show nothing wrong; my watch has recorded several abnormal incidents, of which I was able to send to my doctor. My cardiologist was amazed and thankful.
The exercise apps are useful; I use the biking app mostly....the daily activity monitor is great, definitely motivates. And not having to drag my phone around is awesome.
I recommend the larger size 44mm; more real estate is better when you have this many apps/bells & whistles....bigger is better when there's a lot to look at.