You don’t need a gym, those are just excuses. You can do a lot right at home, and more frequently as you don’t need to go all the way to the gym every time.
Sort of.
Physical fitness for good health has 2 components: aerobic fitness and strength. You can improve your aerobic fitness and your upper body strength at home (rings and/or handstand pushups are enough for all but the most advanced strength athletes).
Core/lower body strength is another matter entirely. People tend to quickly progress to 1x body weight squats and deadlifts. And someone who is more advanced will probably be in the 2x-3.5x range. Without access to serious weight, lower body training is usually pretty ineffective, strength wise.
Doesn't matter, 1x or even less is still 100% enough for life expectancy and general health.
You can absolutely get to 2x bw squats from home with nothing but a chair as gear.
That's been my solution.
If you take into account resale value, it'll actually pay itself off much faster - especially if you're willing to wait for good deals.
I think I was able to put together a full set of weights + another set of 45s for less than $1/lb. I'm using a cheap bar and a cheap rack, so the whole thing cost me less than $800.
I estimate that I could sell it all today for $600 for sure, and probably get back all my money if I was willing to wait 1-2 months.
The other big advantage of using a home gym is wait times; I used to go to a commercial gym, where the wait time for a rack was often more than 30 minutes at peak times. As long as you don't need machines (lat pulldown can be very nice), a rack at home can make gym time much more efficient.
You can't.
I assume your parent was confused about notation. You can get 1x body weight squats (that is to say your actual body + 1x your body weight as additional load) by doing one legged squats off of a chair.
I don't understand where I'm wrong about the 2x bw though?
My thesis is that disregarding upper body gains, which can be compensated by other exercises, single leg squats will get you to 1x + 1x bw, which is 2x, with almost no gear at all.
You can also reasonably easily add about 2x15kg in dumbbells which is almost another 0,7x or so, making home training quite powerful.
The disagreement is purely about notation.
In the strength world, people routinely ignore bodyweight when measuring squat intensity - they only list load weight. I suspect that this is, in large part, an effort to be consistent with other barbell exercises like Deadlift (which I mentioned earlier), Press, Bench Press, Row, etc. where including one's body weight wouldn't really make sense.
If a person has more money and the space, they can do the same thing with dumbbells.
It's really not complicated, but people make it so.
[ be sure to a) check for leakages regularly and b) do arm curls well away from electric outlets, just in case ]
It never occurred to him to get a cheap workout app and get active at home. Even after I told him about this option he rather kept complaining.
People are amazingly stupid sometimes...