The contractile tissue of animals derived from the mesodermal layer of embryonic germ cells.

learn more… | top users | synonyms

3
votes
0answers
107 views

What controls the feeling of discomfort/comfort before and after sleep?

I'm interested in which biological systems or hormones are involved in the following phenomenon: Before sleep it may be difficult to find a comfortable position, and muscular aches and pains are more ...