Even methane (natural gas) is lighter than air, but not by much. Carbon dioxide, which is contained in the air we breathe out and is also easily and safely manufactured by mixing bicarbonate of soda and vinegar, is heavier than air. It tends to sink to the floor and accumulate. So it's a good job that houses aren't air tight.
Cuddling, holding, and sexual play releases chemicals, like oxytocin, in the brain that create a sense of well-being and happiness, says Dr. Renee Horowitz, an ob-gyn who recently opened the Center for Sexual Wellness in Farmington Hills, Michigan.
By Wikipedia ~ 8 min read. Pages: 1 2 All. Oxytocin (Greek, âquick birthâ) is a mammalian hormone that also acts as a neurotransmitter in the brain. In humans, oxytocin is thought to be released during hugging, touching, and orgasm in both sexes.In the brain, oxytocin is involved in social recognition and bonding, and may be involved in the formation of trust between people and generosity.[1][2][3].n humans, oxytocin is thought to be released during hugging, touching, and orgasm in both sexes.