Category: B

  • Baah-ji

    A culture-specific syndrome.  

  • Brain-derived neurotrophic factor (BDNF)

    A substance that can protect your brain cells, promote healthy new neuron growth, and enhance memory. A protein that in humans is encoded by the BDNF gene. In the brain, BDNF is active in the hippocampus, cerebral cortex, and basal forebrain—areas vital to learning, memory, and higher thinking. Various studies have shown possible links between…

  • Blue zones

    A term coined by Dan Buettner that refers to the five areas in the world that boast the longest-living populations (on average).  

  • Buoyancy supported

    Any floating movement on the surface of the water.  

  • Buoyancy resisted

    Movement of a buoyant object toward the bottom of the pool.  

  • Buoyancy assisted

    Movement of a buoyant object toward the surface of the water.  

  • Buoyancy

    The force exerted on an object by the fluid in which it is submerged; mathematically, this force equals the volume of the fluid displaced × its density.  

  • Bulimia


    A condition characterized by an abnormal increase in hunger along with a binge-purge syndrome. Episodic eating binges or excessive intake of food or fluid, generally beyond voluntary control. Characteristics are self-induced vomiting and purging following eating, which is of the binge-eating variety. The resulting loss of body fluids and electrolytes may lead to severe disturbances…

  • Bronchial tubes

    Smaller branches of the bronchi in the lungs. The two air tubes that branch from the trachea, one to each lung. One of the smaller divisions of the bronchi. The air passages that extend from your windpipe into your lungs. One of the larger airways in the lungs, known as a bronchus.  

  • Bromide

    An alternative sanitizer used in pool disinfecting systems that has much of the same effect as chlorine, with slightly different results. It is used to eliminate pathogens, such as bacteria. The first drug introduced as a sedative- hypnotic and used initially as a treatment for epileptic seizures. Salt containing bromine, once formerly used as a…