Revolution Community Yoga will host a free Annual Open House from 2:30 to 6 p.m., March 23, at their location in Acton. Attendees can explore a variety of free 30-minute classes of different styles, all of which are beginner-friendly. No pre-registration is required as classes are first-come, first-served. Other free offerings include a raffle, massage services, kids mandala coloring and henna by Henna Cafe.

Cost: Free. Location: 537 Massachusetts Ave., Acton. For more information, call 978-274-5596 or visit Revolution.yoga.