Jolie Parcher, the owner of the Mandala Yoga Center for Healing Arts, believes that those in the business of giving, such as first responders, nonprofit workers, and caregivers of the elderly and sick, are depleting themselves, a concern that led to a partnership with the Clamshell Foundation of East Hampton to offer free yoga classes for local E.M.S. personnel, domestic violence survivors, those suffering from Parkinson’s disease, senior citizens, and even the weary farmers.

The updated Covid-19 booster shots — which protect against both the original strain of the virus and the now-dominant Omicron subvariants — are already becoming available at pharmacies, physicians’ offices, and other sites.