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.
Fast-twitch muscles. Fast-twitch muscles use an 'anaerobic' metabolism to create fuel and need more oxygen, and they are much better at generating short bursts of strength or speed than slow muscles, such as a 100 metre sprint or weightlifting, but they tire more quickly.
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.