Company CEOs such as Michael Dell of Dell, Marc Benioff of Salesforce.com and Kenneth Chenault of American Express wear digital fitness trackers to improve their health and to engage in friendly competition. Caroline Ghosn, the founder and CEO of Levo League, and Ruzwana Bashir, the CEO of Peek.com, used their trackers to make their own "100-day plan" for healthy habits.

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