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.
Your Action Plan. There's no conclusive evidence that muscle fibers can transform from slow-to fast-twitch or vice versa. In other words, while you can improve at sprinting or other explosive movements, it may not be because you're converting muscle fiber types.