Accelerate the World's Transition to Sustainable Energy - to fight Anthropogenic Climate Change, page-36244

Cardboard beds have been around for ages.

The bed frames, which are made of sturdy cardboard, made their debut at the Tokyo games in 2020 in an effort for sustainability. The mattress, made by Airweave, consist of AirFiber and are meant to be "a luxury firm bed" with three customizable sections that allow athletes to choose the firmness level.

The Paris Games were announced as "Green games" but the Athletes were free to choose their own standards.
You never learn anything until its trialed.
Those ancient greeks got a stone bed so toughen up princess if you want more.