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 is the most basic kicking technique used while swimming backstroke and freestyle. To flutter kick, swimmers alternate the movement of both legs rapidly. An efficient flutter kick helps swimmers go faster by generating forward thrust and maintaining proper body positioning in the water.