Heart palpitations are described as feeling like your heart is racing or pounding. Palpitations can be caused by anxiety, panic disorders, overeating, pregnancy, and abnormal heart rhythms (arrhythmias). Most palpitations are not serious, however, palpitations caused by a heart condition like atrial fibrillation or Afib can be serious and require medical treatment.
WEIGHING BY DIFFERENCE (From Dr. David Chesney) Weighing by difference is the most accurate method to measure quantitatively the mass of a solid sample. This procedure involves repetitive weighings of a weighing bottle containing a quantity of solid reagent. As the solid is removed to another vessel, the mass of the weighing bottle contents decreases.
BMI is your weight (in kilograms) over your height squared (in centimeters). Letâs calculate, however, using pounds and inches. For instance, the BMI of a person who is 5â3 and weighs 125 lbs is calculated as follows: 1  Multiply the weight in pounds by 0.45 (the metric conversion factor)  125 X 0.45 = 56.25 kg.