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61. R.D.

See Registered Dietitian

62. Rectus Abdominis

This is a long, vertical muscle in your abdominal area. When the rectus abdominis is well developed and not covered with fat, it is the one that gives you that “6-pack” or washboard look which so many people strive to have. Exercises such as sit ups and crunches specifically work the rectus abdominis.

63. Registered Dietitian

A registered dietitian (R.D.) is a person who has studied and trained to become an expert on nutrition and food. He or she has at least a bachelor’s degree, has completed a CADE-accredited (Commission on Accreditation for Dietetics Education) program under appropriate supervision, and has passed his or her registration exam to become an R.D.

64. Resting Metabolic Rate

When your body is completely at rest, it is still burning calories for various functions including breathing, keeping your heart beating and your temperature regulated. Your resting metabolic rate (RMR) refers to this minimal number of calories your body requires. This is a helpful number to know for losing, gaining or maintaining your weight.

65. RMR

See Resting Metabolic Rate

66. Satiety Hormone

See Leptin

67. Saturated Fat

Any fat that remains in solid form at room temperature is considered a saturated fat. Saturated fats are generally considered unhealthy fats because they can contribute to weight gain, elevated cholesterol levels and an increased chance of developing heart disease. Foods such as butter, ice cream, cheese, lard, and the skin on chicken contain saturated fat.

68. Serotonin

Serotonin is one of several brain chemicals or molecules known as neuro-transmitters. Neurotransmitters enable the neurons in your brain to communicate with each other. When serotonin doesn’t transmit properly, it creates a deficiency. Research has shown that this deficiency may contribute to anxiety, depression, appetite problems and aggressive behavior.

69. Trans Fat

See Trans Fatty Acids

70. Trans Fatty Acids

Whenever a fat which is normally in liquid form at room temperature is hydrogenated, it creates trans fatty acids, or "trans fat". Hydrogenation is a chemical process in which hydrogen is added to the molecules. Trans fat is considered unhealthy because it can increase your cholesterol levels and make you more prone to developing heart disease.

71. Transversus Abdominis

Lying deep in your torso below all your other abdominal muscles is a muscle called the transversus abdominis. This horizontal muscle extends from your ribs to your pelvis, and goes around your trunk from the front to the back. This muscle is used when you breathe and helps keep your pelvis stable.

72. Triglyceride

The primary type of fat present in your blood and in your body consists of triglycerides. When you eat more food than your body needs for energy, your body stores it as excess fat in your abdominal area or hips to be used for energy in the future. That fat is made up of triglycerides.

73. Unsaturated Fat

Any type of fat which remains in liquid form at room temperature, such as olive oil, canola oil, and vegetable oil, is a type of unsaturated fat. They may be either monounsaturated or polyunsaturated. Avocados, olives, and fish that are high in fat, such as salmon, all contain unsaturated fat.

74. Visceral Fat

Visceral fat is not the same as body fat. This is the fat which is underneath your muscles and which surrounds your body’s organs. Visceral fat is considered to be more dangerous than the fat below the surface of your skin because it becomes cholesterol in your blood when the liver metabolizes it.

75. Waist Circumference

Your waist circumference is your waist measurement, and is used to help determine and monitor how much body fat you have. A high waist circumference (over 35 inches in women, and over 40 inches in men) is due to excess stomach fat and is associated with the development of heart disease, diabetes, high cholesterol and elevated blood pressure.

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