Shut Up and Smile
Freaking out about a speech?  Smile, look at the audience, and keep quiet for 2 seconds, says T.J. Walker, president of Media Training Worldwide.  It’ll slow you down and create the impression that you’re relaxed and in control.  The audience will then feel more comfortable, leading you to actually be relaxed and in control.  Now start talking. 

Run Fast
Bike hard.  Punch the heavy bag.  A University of Missouri at Columbia study found that 33 minutes of high-intensity exercise helps lower stress levels more than working out at a moderate pace.  What’s more, the benefits last as long as 90 minutes afterwards.

Researchers at West Virgina University found that 35 participants who underwent “mindfulness meditation” saw a 44 percent reduction in psychological distress over 3 months.  Just sit quietly for 10 minutes a day and focus on your breathing.