A batch of the best highlights from what Niels's read, .
With resting heart rate it gets more concrete. A deviation of roughly five to seven beats, or around ten percent above your norm, counts as meaningful in the literature, and a clearly elevated resting heart rate is, in our experience, the earliest sign that something is brewing.
Is There a Readiness Score? Yes, Fourteen of Them
Christopher Klenk
To use 10/10/10, we think about our decisions on three different time frames: How will we feel about it 10 minutes from now? How about 10 months from now? How about 10 years from now? The three time frames provide an elegant way of forcing us to get some distance on our decisions.
Decisive
Chip Heath and Dan Heath
Standard advice is to allow 1 day of adjustment per hour time difference.