As we age, many of us experience sleep problems. Why do we need a certain amount of sleep each night? And what can we do to get it? Learn all of the answers to these questions this morning from 10:30-11:30 a.m., Tuesday, Aug. 9, at the Pleasanton Senior Center, 5353 Sunol Blvd. Cost $1.75 for residents and $2.25 for non-residents. Call 931-5365 or visit www.pleasantonseniorcenter.org.