title: Does the use of async/await create a new thread?
body: <p>I am new to <a href="https://stackoverflow.com/tags/task-parallel-library/info">TPL</a> and I am wondering: How does the asynchronous programming support that is new to C# 5.0 (via the new <code>async</code> and <code>await</code> keywords) relate to the creation of threads?</p>
  
  <p>Specifically, does the use of <code>async/await</code> create a new thread each time that they are used? And if there many nested methods that use <code>async/await</code>, is a new thread created for each of those methods?</p>