I'd like to suggest adding the ability to track caffeine intake similar to the current water tracking feature.
Reason is that caffeine for many is a huge but "silent" influence on both performance and also sleep/restoration.
Optimal would be to be able to add "standard" caffeinated beverages + amounts on oz/ml and see both a log of the intake over time + see them pin pointed out on the body battery timeline along side activitites such as sleep and workouts.
