I was a short skinny weasel through high school. But I was fairly athletic, weight room, etc. I ran track and cross country, played baseball but got sick and tired of the politics of organized ball. During college I actually put on weight, and got a little belly going...........OK OK BEER BELLY...........was proud of the thing, because I was pretty slender............uh oh...........well the sucker blossomed. I was still pretty active, but **** it kept growing! Finally in my late 40's (that took awhile) I figured out my body type just only stored stupid simple carbs (sugars, white flours). I knew my intake was out of whack and needed to increase protein. I went veggies, meat, nuts, etc (no fruit juices, hardly any beer, etc) and went from near 200 to ~165 pounds in 3-4 months. 170 is OK for me, 180-185 belly is back. Staying under 170 just is not going to happen and that's OK 175 seems ideal.
I'm nearing 63, and also not happening is running. I mean I CAN run but not for distance. Joints no longer are OK with it. We do a lot of hiking and walking and hills must be included. Some hikes are gnarly. Joints are all good with it. My wife has been doing some work outs with YouTube. Darn if I don't like those now as well. We alternate cardio and weight (HasFit is one, for example). Some of the exercises you hold a light weight in each hand, I use 8 pounds wife uses 5. Now to you power lifters, shut up.
Now that doesn't sound like much, but when in your 60's and doing 30 minutes, turns out to be a very good work out.
I want to bike BAD, but all my bikes are motorized or are dead carcasses. Want to buy a good mountain bike, but none available.