updated 08/25/2015 AT 8:16 PM ET
•originally published 01/26/2014 AT 3:45 PM ET
Who’s that girl? In your L.A. spinning class?
Arriving in black top, black beanie and sunglasses – and also what one source said was a grill – Madonna donned black riding gloves for the 45-minute full-body ride. For the arms section of the class, the buff mom of four chose 2 lb. weights to complete her workout.
She later cooled down with her trainer Nicole Winhoffer inside the spinning studio as the rest of her class stretched outside in a courtyard.
Madonna is set to perform on the Grammy Awards show Sunday night, making her first appearance since 2006 when the seven-time Grammy winner shared the stage with Gorillaz.