Sabrina Ortiz/ZDNET’s review of Whoop 4.0 highlights its key features and benefits. The Whoop Coach, powered by OpenAI’s GPT, makes it great for beginners looking to improve their wellness and fitness. It provides unique health-tracking metrics, such as recovery and strain, and has received endorsements from elite athletes. The addition of Whoop Coach, a GPT-4-supported chatbot, aims to broaden the device’s user base by offering personalized recommendations and fitness coaching. The reviewer had a positive experience using the Whoop Coach, finding it helpful and informative. Ultimately, the Whoop 4.0 is recommended for those who are serious about improving their health and fitness and are willing to invest in a subscription. For those looking for more basic fitness tracking, there are other wearables on the market that may be more suitable.