How did I feel during activity?
I would be very useful to have a "How did I feel" rating scale for the activity. Many users might put this as a description in the free text area, but having a rating would enable it to be plotted in the training log. Having a drop down menu for this rating would make it easy to enter, and provide a good metric for analysis. I think this could be an extremely useful feature for both individuals and coaches looking across multiple individuals.