Training my smartwatch to track intelligence

I hope Garmin sees your passion project and greenlights it for inclusion. You have the right approach to ensuring folks are at their optimal health to grow intellectually as a person.

I've tracked sleep using a number of devices and algorithms and I haven't found a single one that regularly aligns with what and how I feel.

I know it's tracking real data, but the conclusions feel completely made up.

What are other people's experience -- especially from those who are more bullish about sleep tracking?