Hi Christopher,
On your dashboard (http://tribesports.com/home), underneath the update box there should be a link that says "add training data" - if you click this, an expanded form will appear that allows you to either manually enter data, or upload a file from a GPS tracking device if you have one. You can do the same if you're entering an update under a specific challenge.
At the moment we only support manually adding distance and time data, not reps, but expanding the range of information users can record is a big project for us right now - watch this space!
All the best,
Simon
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