We have several days on the week where the students have to endure two 3.5 hour lecture classes, needles to say, their energy level gets pretty low around the 3rd hour. Physlical endurance, balance and energy flow area all important aspects of being a Massage Therapist. I often practice Tai' Chi or Qi Gong for 20-30 with my students on a long lecture day, it get their Chi moving and their minds focused for last half of the day.