In the Health Tracking Network, people across the world work together to monitor common
illnesses and discover factors related to illness. When you join the Health Tracking Network, you:
* spend 2-3 minutes per week answering questions about illness symptoms and other topics,
* earn money for charities of your choice, and
* can track your own health, fitness, or anything of interest to you with separate tracking tools. The Health Tracking Network has no ads, and participation is free and completely anonymous.
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