Because you have more layers on.
MOR ROCKS
There are several manufacturers that offer double sleeping bags meant for two people. Most of these double sleeping bags fit people up to 6 feet tall. The double sleeping bags roll or fold up to sizes similar to that of a single sleeping bag. By doing an internet search on double sleeping bags, you will be able to find many available bags to purchase.
Answer:Having curly hair doesn't make you warmer than straight hair.FactWhat might keep you warmer is if you have more hair than other people. If you have more hair you have a better chance to keep your self warmer.
Leather gloves will keep your hands warmer and are more durable than cotton.
Both synthetic and down bags have very different qualities, strengths and weaknesses. Synthetic bags are less expensive to manufacture and therefore are normally cheaper to buy. When wet they are also less likely to lose their vital insulation properties, unlike down sleeping bags. Down bags are generally much warmer than their synthetic counterparts but great care must be taken to look after them. When they get wet they will lose a lot of their insulation properties. It is recommended to take them to a specialist cleaner rather than wash them in your machine. Often more expensive than synthetic bags, they also last a lot longer. Down works by the feathers building on the insulating layers being warmed by body heat. Both have differing qualities and can been seen here - http://www.outdoorleisure101.com/sleeping-bag-reviews
Yes, flannel sheets keep you much warmer than any thinner material.
Down traps a lot of air, and air is a good insulator.
The down, rather than the flight, feathers.
Flannel jeans will always keep you warmer than thermals, and will be much more comfortable.
to keep them warmer than their own fur can
yes
Because wool clothes are heavier, thus making them warmer.
Yes it will be warmer depending on how thick your thick layer is!