Taking advantage of technology tools may help to optimize health and longevity. Many sports watches and (arm)-bands can measure your health rate. The rest heart rate is basically you lowest operation mode of your heart. The ultimate lowest rest rate typically occur while sleeping. Lower rest heart rate typically indicate better health condition. Regular exercise is likely to improve your rest heart rate (RHR). The room temperature in which you sleep can also influence the RHR. Your eating habits before bed time is also likely a factor. Eating primarily carbohydrates in the evening before bed time might increase the RHR. Skipping dinner entirely may lower your RHR.
Conclusion: By measuring your rest heart rate, you will know your baseline. You can then experiment with what you eat and when you are eating.
My experience: Late night eating and consumption of carbonhydrates before sleeping increases my RHR. I therefore ideally follow a 16-8 eating habit eating breakfast and lunch in a 8 hour window.
Table below display different ranges of rest heart rates in beats per minutes (BPM).
| Gender | Athlete | Excellent | Great | Good | Average | Below Av. |
| Men | 49-55 | 56-61 | 62-65 | 66-69 | 70-73 | 74-81 |
| Women | 54-59 | 60-64 | 65-69 | 70-73 | 74-78 | 79-84 |