Sister Paulette Schroeder is to have a yoga session 9 a.m.-noon Saturday in the St. Francis Convent library. This would be a general workout in postures and breathing. Guests are welcome to attend. A 15-minute break is planned and a meditation during which participants are to lie flat on the floor. Some extra mats, blocks and belts are available, or participants can bring their own. The cost is $10. Schroeder offers this three-hour session once a month in addition to her weekly classes at 6:30 p.m. each Wednesday.