Gyms Take Over Retail, Celsius Surges, Sweetgreen Eyes Personalized Food

March 20, 2026: Your daily rundown of health and wellness news, in under 5 minutes.

Today's top stories:

• Service-based tenants account for 50%+ of U.S. retail leasing for first time, with gyms making up 30% as fitness and wellness drive retail growth

• Celsius hits $2.5B revenue in 2025, up from $75M seven years ago, as energy drinks expand beyond one-off boost into meals and social settings

• Sweetgreen pushes higher-protein items and Function Health partnership, with CEO aiming to build "Spotify for food" recommending meals based on health data

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