Each event or task in your day affects your energy differently. For example, you may feel energized from a meeting, but drained from an hour of inbox cleaning. While we aren’t yet able to understand this fully, we aim to estimate how your energy will affect your energy level through event categorization. To check or set an event’s category, click on the event where you will see a tag emoji with an event category listed. We use historical data and a prediction algorithm to make a guess as to what the event could be — indicated by a dotted outline. If you notice that this is wrong, change the event category and Lifestack won’t make that mistake again.