The colosseum was largely intact until the 14th century when an earthquake knocked down the southern side of it. Rather than rebuild it, everyone was basically "hey, free building materials"

In general, the efficacy of most supplements is debatable. If you actually read the documentation on most of them, you'll notice that they're rather vague on what they actually DO. In many cases, they have absolutely no scientific evidence to suggest they actually do what they claim, so they leave their claims to vague phrases like "digestive health" or "joint health". There are also concerns about the safety of them if they did work (e.g., a supplement that claims to increase breast size and actually does? What the hell is it doing to your body to do that?)

The only supplements with any real evidence are the micronutrient ones (i.e., "vitamins") and only if you have a specific deficiency (e.g., calcium supplements for someone who's severely lactose intolerant).

Tldr, most supplements are at best useless or at worse harmful.

After my initial reaction of "dafuq is wrong with your dog's face?"

Ah, so you've met Mortimer.

Yeah, USA's nominal GDP is about $7 trillion more than China's, and the per Capita GDP of the US is much higher. There's some serious shenanigans going on here to put China about the US.

Basically, the power has to go somewhere, so if demand drops, the system cycles off. I imagine it's automated, but starts and stops are wear and tear on the system. And things might get gummed woke it's down. Further, the start up systems need power, so there's another point of failure.

Filming The Shining did not do her mental health any favors.