Dimitra Yoga instructors lead outdoor classes from 8 to 9 a.m., Sundays, and 6:30 to 7:30 p.m., Mondays, in Lewes Canalfront Park. Classes also are offered from 8 to 9 a.m., Sundays, in front of the Bethany Beach Bandstand at Garfield Parkway. Participants may just show up with a mat or towel. No advance registration is required. The suggested donation is $20 per class. For more information, go to www.dimitrayoga.com.