Caffeine is the most widely consumed stimulant on the planet and, used sensibly, a useful tool: it improves concentration, mood and athletic performance. The trick lies in the dose and, above all, the time of day.
Caffeine in common drinks
| Drink | Caffeine | Notes |
|---|---|---|
| Espresso | 60-80 mg | Concentrated but small |
| Filter coffee (large cup) | 120-200 mg | The most common source |
| Black tea | 40-70 mg | Less than coffee |
| Green tea | 25-45 mg | Mild + L-theanine |
| Energy drink | 80-150 mg | Watch the sugar |
| Cola soft drink | 30-40 mg | More sugar than caffeine |
Renzy also tracks your drinks: so you can see if that afternoon coffee is linked to worse sleep or more cravings the next day.
Scan your food with a photo. Calories, macros and micronutrients in 3 seconds.
How to drink coffee intelligently
- Up to 3-4 coffees per day for most people (200 mg if pregnant)
- No caffeine after 2-3 pm
- Drink it black or with a little milk: sugar is the real problem
- As a pre-workout, 30-60 min before improves performance
- If you have anxiety or insomnia, cut back and see how you improve
Coffee can be part of a healthy life without any problem. Enjoy it in the morning, avoid it in the afternoon and watch what you add to it. Log your food and drinks with Renzy to detect exactly how it affects you personally.
Renzy calculates all of this for you
Scan your food with a photo. Calories, macros and micronutrients in 3 seconds.
