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For members of Thunder and Lightning Athletic Club to reserve their place in a class, sign up for gym events, and general account management like updating headshots and credit card on file.
What's New in Thunder and Lightning Athletic
3.42.0
June 3, 2026
Whether you prefer training before sunrise or just think everything looks cooler in black, dark mode has entered the chat. Same great app, now available in ninja. We also cleaned up how workout content displays and fixed deep links so tapping a video actually takes you where you want to go.
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