XSS based on HR?

During the winter I don’t use a power meter. Is there a way to estimate XSS based on my HR data? I know TP does have this feature.

Given we have 3 dimensions to XSS, we’d need a bit more sophistication to use HR for XSS calcs (we in fact have a way to do this but not yet available in the software). Have a look at our FAQ on how to add manual activities. You can set up some activities and favourite them and make it really easy to add them to your history.