Have you ever seen or even heard of a person who is obese who doesn’t eat hyperpalatable foods? (That is, they only eat naturally tasting, unprocessed, “healthy” foods).
This seems like the occam’s razor expanation to me. Some of our new flavour/texture combinations are so rewarding that they easily overcome the natural stop signals, leading to excess caloric consumption in most (to a variable degree), which leads to weight gain in some.
A study which gave its participants a 1000cal/day dietary surplus found while some participants gained 14kg of fat over the course of the study (I think it was for 3 months), others gained as little as 4kg. As one would expect, there is genetic variance in one’s vulnerability to the effects of a harmful caloric surplus, and there is probably also genetic variance in one’s susceptability to hyperpalatable foods.
I have found that bed surface cooling devices like the ChiliPad or Eightsleep Pod Pro are excellent. I have the ChiliPad and noticed better sleep straight away. This includes it being easier to get to sleep, less waking up during the night and waking up in the morning more refreshed.
Mattresses are great insulators. If it’s very cold and you’re trying to get warm, they’re fantastic. But if it’s warm and your body needs to shed heat during the night, they’re a problem.
I would recommend these products to anyone who lives in a hot climate and wants to improve their sleep. The bigger you are physically, the more of a difference you will notice from them, as you have more heat to shed and less surface area proportionally to shed it.