Answer to Question 1
As you evaluate your body weight and the weight you would like to reach and maintain throughout life, there are a few metrics that can help you do so. These metrics provide an estimate of healthy and unhealthy body weight. These commonly used techniques include body mass index (BMI), waist circumference (WC), and waist-to-height ratio (WHtR). These assessments require only a scale and a measuring tape, are quick and easy to obtain, and offer a realistic way for you to track your body weight throughout the years.
Answer to Question 2
Dual energy x-ray absorptiometry (DXA) is a method to assess body composition that uses very low-dose beams of x-ray energy to measure total body fat mass, fat distribution pattern, and bone density (for osteoporosis risk assessment). It is a simple procedure that takes less than 15 minutes and is most frequently used in research and by medical facilities. The SEE for this technique is 1.8 percent.
Generalized body plan of a bony fish
Countercurrent heat exchange in dolphin flippers promotes conservation of body heat.
What stress does to your body
Integumentary regulation of body temperature.
Healthy Bread
The Brain and Body Under Stress