First Treehouse Class: FREE ! Yoga, Meditation, Art, Wellness Yes. Your first full 75- or 90-minute class is on us! Just come visit the studio 20 minutes before the class of your choice to meet the teacher and fill out the Treehouse Yoga Information Sheet. Bring a small towel, a water bottle, and a change of clothes. Mats are available at the studio on a first-come-first-serve basis. No need for a reservation; simply walk in!