If you are seeing RSS values in the metabolic fitness trend chart that are higher than any of your runs, it might just be the way PowerCenter calculates your improvement in fitness.
If your runs happen on different days but within 24 hours (for example, an evening run and a run in the morning the next day), PowerCenter may combine the RSS values for these two runs.
Currently, PowerCenter combines all RSS for a 24 hour period based on the Universal Time Zone (basically UK time). As the timezone used to determine the 24 hour period can different than your local timezone, it can happen that your runs on separate days are combined.
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