Def /\ mummy bags are the best for warmth, but can also be restrictive, esp for us taller ppl, some allow enough movement though, as long as i can sleep on my side and bend my legs, i'm usually happy
Even a 0.2C difference is significant when we're talking about core temps, there are differences between men/women/old/young, aswell as individuals, and even day to day, many peoples core temp falls slightly when sleeping too; the difference in tolerance of external temps makes things even more complicated.
This is one reason i like layers, you can add/remove to get more comfortable (not much use at extremes of course)
Supposedly we all have the same body temperature: 98.6f or 37c as an average plus or minus less than 1 degree for a healthy person. However we all vary at least slightly and we definitely have different circulation (which regulates that temperature) But as you said, we can only begin with a standard system and adapt it to our own needs. The EN system sounds like a reasonable starting point.
Even a 0.2C difference is significant when we're talking about core temps, there are differences between men/women/old/young, aswell as individuals, and even day to day, many peoples core temp falls slightly when sleeping too; the difference in tolerance of external temps makes things even more complicated.
This is one reason i like layers, you can add/remove to get more comfortable (not much use at extremes of course)
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