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contests of speed and endurance with serious biochemical and physiological consequences lessened by adequate training beforehand. See also physical fitness, exertional rhabdomyolysis, heat exhaustion, pulmonary hemorrhage, epistaxis, exhaustion.

racing dogs
usually refers to Greyhounds and Whippets, but in some instances may be used to describe the dogs used for endurance sledge racing.
racing pigeons
a variety of pigeons, bred and selected to fly long distances back to their own homes. Races are conducted as time trials with groups of birds being released at specific times and their arrival clocked in.
racing plates
lightweight, single-use, horseshoes made of aluminum and with a fullered contact surface; see also horseshoeing.

Patient discussion about racing

Q. what causes the heart to race so fst it feels like it going to come right out your chest?

A. Too much caffeine or alcohol or food can sometimes cause your heart to race in an erratic way. Heart rhythm problems (arrhythmias) occur when the electrical impulses in your heart that coordinate your heartbeats don't function properly, causing your heart to beat too fast, too slow or irregularly.

Arrhythmias are common and usually harmless. Most people have occasional, irregular heartbeats that may feel like a skipped, fluttering or racing heart. However, some heart arrhythmias may cause bothersome — sometimes even life-threatening — signs and symptoms. Hope this helps.

More discussions about racing
References in periodicals archive ?
Henderson, while yesterday coming to terms with the "horrific" events, was left contemplating whether his decision to fit his runners with aluminium racing plates had saved Kid Cassidy's life.
The racecard for today's meeting will include a tribute to the The Tatling, while also wishing him a happy retirement should his owner/trainer Milton Bradley be able to convince his 12-year-old to hang up his racing plates.
PJ McCORRY'S Galway festival winner Kahuna will hang up his racing plates after his 61st run in today's Water Towers Chase at Ballinrobe (4.
Prolific two-mile hurdlers Hardy Eustace, Harchibald and Brave Inca, first three home in Cheltenham's championship race five years ago, go head-to-head at the Failte Ireland Dublin Horse Show today for the first time since their racing plates were hung up.