Do I need to do "warm ups" before a Restorative yoga practice?

A Restorative yoga class typically begins with a few warm up poses or a gentle flow.

Why warm up poses?

• They encourage you to connect with your breath, slowly becoming aware of each inhale and exhale ... 
• prepare you mentally for the practice ...  
• and ready your body to really let go, to release tension – the goal of restorative yoga.  

   Welcome your breath into your body

Welcome your mind into your breath.

Welcome your body into the pose.

Welcome to your practice.