The Viking’s guide to smart caffeine use

Coffee — the black elixir of focus, strength, and fire in the blood. Used wisely, it’s a mighty tool. Used carelessly, it can betray you like a slippery sword in battle.

Here’s the truth every modern Viking should know:
☕ Caffeine in moderation can sharpen the mind, boost energy, and even lower the risk of type 2 diabetes and neurodegenerative diseases.

🔢 The generally safe dose? About 400 mg of caffeine per day — equal to 3–4 cups of regular coffee.

But not all warriors are built the same…

⚠️ Some people metabolize caffeine slower due to a genetic variation (the CYP1A2 gene). For them, even one cup can cause racing heartbeats, anxiety, or raised blood pressure.

🕒 Drinking coffee after 3:00 PM? Be careful — caffeine lingers in the bloodstream for hours. What energizes you now might sabotage your sleep later.

💡 Viking Tip: Treat coffee like a weapon — powerful, but not to be used recklessly. Know your limits, time your sips, and use this brew to conquer your day, not ruin your night.