We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
Cardio plus total body stress - and fat-destruction if needed. Masochist that I am, and over 45, I like the stress and mental challenge of total body calisthenics. They do not build strength, but they require that you build strength to do them. They build fitness and endurance, and it feels good when you stop. If you can breathe. Humbling, painful, and a source of despair. Good stuff.
Notice how prosperous people in the US look strong and trim into their 70s and 80s? It's not automatic. They work at it to stay fit for life, and they do not pig out despite wanting to give in to comfortable slobbery like the last generation. Giving up on vitality because of lack of will and effort (aka laziness). Sex life, too.
Jumping rope and jumping jacks are great calisthenics that belong in any fitness routine, but it's the heavier, intense ones that test your body and character, that try to kill you. What fails to kill you makes you fitter.
My program (and Mrs. BD's program which is roughly the same but she does yoga too) includes 3 sets of squat/presses, or burpees, or heavy ball smashes, or lunges with weights, or step-ups with presses - all with planks between sets. That's a Superset. Looks easy but it's a killer. Doing 3 sets of one or more of the above five days/week adds good intensity and variety to a fitness program. Thing is, you have to push it to the limit and that takes mental discipline because it is HARD WORK and IT HURTS and YOU WANT TO STOP. Thus the character factor.
No pain, no gain.
Right now, for example, I do the squat-presses with a 30 lb. heavy ball. If you can easily do 20 reps, raise the weight and God bless. Take a 1-minute plank to "rest" between sets and get right back to it.
(nb, As I have said, we do mainly heavy weights 2 days/wk for an hour, heavy calisthenics 1 day/wk for an hour, and cardio intervals 4 days/wk for 40-70 minutes depending on how much time I have free. To ramp up intensity, my boss wants 3 of any one of these supersets daily. Call me insane. It pays off. I fit into my age 32 tux except the shoulders are tight now. If it kills me, I'll be a fit corpse.)
I used to find this stuff boring to read about, but I've sort of gotten religion on it lately, so now I can't get enough of it. Baby steps for me, though, for the time being.