This is one of the more common questions we get from members. Here is a snapshot of each.
The majority of contest options are self-reported. This means that you need to log in and record your progress during the contest. For example, if you're doing a contest on hydration, you will need manually log how many glasses of water you drank during that day.
Verified contests mean that your synced activity tracker is records your activity automatically, so there's no need to self-report. To participate in a verified contest, you must have an activity tracker registered to your account. Unfortunately, self-reporting isn't allowed in verified contests.