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 uses all the major muscle groups in the legs. These include your gluteus maximus, quadriceps and hamstrings. Whether on your front or your back, you'll also use your calves as well as three muscles in your feet: the abductor hallucis, abductor digiti minimi and flexor digitorum brevis.