A labor-hour contract is a variation of the time-and-materials contract, differing only in that materials are not supplied by the contractor. See 12.207(b), 16.601(c), and 16.601(d) for application and limitations, for time-and-materials contracts that also apply to labor-hour contracts.
Appraising the brain's energy budget. In the average adult human, the brain represents about 2% of the body weight. Remarkably, despite its relatively small size, the brain accounts for about 20% of the oxygen and, hence, calories consumed by the body (1). This high rate of metabolism is remarkably constant despite widely varying mental and motoric activity (2).
Adult females 20 to 39 years should strive for a body fat percentage between 21 and 32 percent. Forty to 59-year-old women should fall within the 23 to 33 percent range, while those 60 years and older should be between 24 and 35 percent.