The make-up free star looked stony-faced as she made her way to a nearby gym in lycra work out gear.
The fitness fanatic also recently opened up about her and Kanye's extreme diet plans.
The 34-year-old beauty said: "Kanye loves to eat really healthy and is always on different diets. He has a chef who comes in the morning and cooks breakfast for both of us and gets our meal plans together for the day. We just started seeing a nutritionist who changes our diet every 10 days.