There is no such position as Mayor of the United States (US). A  Mayor is typically a political position for cities and towns. The  United States is led by a president. Curr â¦ ently, the president is  Barack Obama.
Slow twitch muscle fibres are good for endurance activities like long distance running or cycling. They can work for a long time without getting tired. Fast twitch muscles are good for rapid movements like jumping to catch a ball or sprinting for the bus.
The flutter kick uses alternating leg movements to propel a swimmer through the water. The flutter kick is the kick of choice for swimmers performing the backstroke, which is also called the back crawl, and the freestyle, which is also called the front crawl.