Metrics

Most physical activity metrics are designed with the needs of performance athletes in mind. The problem, however, is that most people's goal in terms of physical activity is not to improve their maximum performance by the end of the day.

Exploring the realistic maximum steps one can take, we find that ultra-endurance levels like 259,200 steps a day are unsustainable. Most benefit from a practical limit near 8,800 steps, above which health gains are marginal. Step challenges should be fun and tailored to individual health needs.