Best Answer: Street BMX's generally have a rear brake for slowing down when necessary. If this brake is used with a gyro (attached to the headset) then you are still able to bar spin. If a gyro is not used then a clean bar spin will not be possible without twisting the cables. Source(s): Experience.
Mechanism of Gas and Flatulence. Flatulence is a voluntary or involuntary expulsion of gas through the anus commonly referred to as passing gas or âfartingâ. Gas produced by the breakdown of food within the gastrointestinal tract may cause bloating and discomfort which is relieved upon passing flatus (âfartâ). Digestion is a physical and chemical process that produces byproducts, including gas that is passed out as flatus.
The most common causes of abdominal bloating are: 1  swallowing air. 2  constipation. 3  heartburn. 4  irritable bowel syndrome. 5  intolerance to dairy products or other food items. 6  eating too fast. 7  weight gain. 8  overgrowth of bacteria in the small bowel. 9  hormonal flux (especially PMS for women).