9 April 2026. Thursday
Almost one year ago I made an experiment: I turned on a black-and-white filter on my laptop. I spend almost all my time with my laptop, and I rejected colors for a few months. I wrote code without highlights and watched movies without colors. After that I turned it back and was impressed by the bright colors. I remembered them differently. But I didn't notice any visible changes in my life. It was just an experiment.
Today I processed a knowledge base about someone else's productivity system. It's much simpler than mine, but I saw a note about melatonin. Device screens emit blue light and it suppresses melatonin before sleep. My laptop has a night shift mode to reduce blue light, but maybe it's not enough. I can't stop using my laptop before sleep because I write a lot of reports, read books, etc. What can I do?
I set the black-and-white (grayscale) filter to turn on at 21:30 and turn off at 06:00. I'm not sure, but maybe it will increase my sleep quality. It's a new experiment based on the old one. Every day I'm trying to improve my schedule, but I never thought about this possibility. I will write about the results next month.
Statistics
Key metrics and comparison with the same day last week:
| Metric | Today | Then | Comment |
|---|---|---|---|
| Pomodoros | 11 | 12 | −1 pomodoro |
| Deep focus | 4h 35m | 5h 0m | – |
| Tasks | 51/51 | 52/52 | – |
| Completion | 100% | 100% | – |
| Calories | 2717 | 2689 | – |
| Plank | 10 min | 10 min | – |
Diet
| Product | Weight/Volume | Kcal | Protein (g) | Fat (g) | Carbs (g) |
|---|---|---|---|---|---|
| Rice (dry) | 200 g | 700.0 | 14.0 | 1.4 | 156.0 |
| Eggs (5 pcs) | 250 g | 357.5 | 31.5 | 24.8 | 1.5 |
| Papaya (flesh) | 680 g | 292.4 | 3.2 | 1.8 | 73.4 |
| Chicken breast (boiled) | 210 g | 287.7 | 62.6 | 3.8 | 1.1 |
| Tofu Ichiban Momen | 280 g | 285.6 | 25.0 | 17.8 | 6.4 |
| Roasted peanuts | 36 g | 204.1 | 9.4 | 17.6 | 5.8 |
| Butternut squash | 210 g | 94.5 | 2.1 | 0.3 | 24.6 |
| Orange juice | 200 ml | 90.0 | 1.4 | 0.4 | 20.8 |
| Tomatoes | 500 g | 90.0 | 4.5 | 1.0 | 19.5 |
| Kohlrabi | 320 g | 86.4 | 5.4 | 0.3 | 19.8 |
| Kimchi | 210 g | 75.6 | 4.0 | 3.2 | 4.4 |
| Chia seeds | 10 g | 48.6 | 1.7 | 3.1 | 4.2 |
| Vietnamese apple (Mận) | 135 g | 33.8 | 0.8 | 0.4 | 7.7 |
| Mung bean sprouts | 100 g | 30.0 | 3.0 | 0.2 | 6.0 |
| Enoki mushrooms | 75 g | 27.8 | 2.0 | 0.2 | 5.9 |
| Bok choy | 100 g | 13.0 | 1.5 | 0.2 | 2.2 |
| TOTAL | ~3516 | 2717.0 | 172.1 | 76.5 | 359.3 |