Bundle includes three books by Dave Asprey. ⭐️ Head Strong: The Bulletproof Plan to Activate Untapped Brain Energy to Work Smarter and Think Faster-in Just Two Weeks ⭐️ Bulletproof: The Cookbook: Lose Up to a Pound a Day, Increase Your Energy, and End Food Cravings for Good ⭐️ The Bulletproof Diet: Lose Up to a Pound a Day, Reclaim Energy and Focus, Upgrade Your Life All in good used condition.