FDA (Food & Drug Administration) - It is the US federal agency responsible for the regulation of pharmaceuticals (drugs) and food products

Jog - A slow or very easy run. Often considered an insulting term by serious runners who just call it an easy run.

Race walk - A specific, speedy walking technique that must follow rules and is judged (when performed in competitions). An Olympic sport since 1908.

Heart rate calculations - Standard formula is 220 - (your age) for men, 226 - (your age) for women. Error is 10-15 beats either way since heart rate maximums are genetically determined.

Recovery heart rate - see Heart rate, recovery

Vitamins - organic, essential nutrients required in small amounts and sometimes harmful in excessive amounts.

Intervals - Exercise that alternates high intensity ("work") with easy or light intensity ("recovery"). Used by performance athletes for speed and endurance.

Caffeine - a natural stimulant found in many common foods and beverages, including coffee, tea and chocolate

Individual Beliefs - overt and covert beliefs held that guide our decisions (eating and otherwise)

Isotonic contraction - A dynamic muscular contraction used in common weight-training exercises where the muscle moves the limb through a range of motion while contracted. Normally called dynamic training or contractions.

Vastus intermedius, lateralis and medialis - 3 of the 4 muscles of the thigh that make up the quadriceps. Strong quads help protect your knees. The 4th muscle is the rectus femoris. Cycling, skiing, running and hiking downhill work these muscles