Red Blood Cells is the formed element of blood that is primarily involved in gas exchanged
"Body composition assessment is a physical test that measures the proportion of the various components of a person's body. The human body is comprised of water, protein, fat, and minerals, but for most purposes, it is the level of fat compared to lean mass that is of interest. In general, most body composition analysis tests measure the ratio of fat to lean tissue. Body fat, or adipose tissue,
has chemical and physical properties that allow for a number of analytical methods, each with its own advantages and limitations."
information from chacha .com
The part of the brain that works as the "master switch board" for the endocrine system is called the hypothalamus. The pituitary gland in the hypothalamus, specifically, regulates the activity of the endocrine glands.
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Since you didn't include the options, a combination eating less and exercising more generally results in weight loss.
The first couple red flags are him hitting you and trying to beat you/ kill you , no “man” should be putting his hands on a female.!