Depends on how fast he runs in a sitting. If he runs slow during the 20 minutes he isn't getting much done :D.
<span>The stability that comes from the trunk and the spine.</span>
C. E.Coli, it is a sickness you get when you eat something under-cooked or prepared incorrectly, and gastrointestinal is in the stomach region, i'm 80% sure this is correct
Tell the friend to be careful not to take too much. It does not sound like they have a negative relationship with this drug, nor serious health issues. Telling them to be cautious is the most helpful/appropriate thing to say here.