• Trusting puff count too much. It's a guide, not a rule. Treat it as a ballpark.
• Ignoring the battery indicator. If your device has one, use it. That little light can save you from being caught without a vape.
• Not checking the e-liquid level. Some devices have a window to see the juice. If yours does, use it. You can often tell when you're almost out before the flavor changes.
• Forgetting that draw length matters. If you take 5-second draws, you'll get half the puffs of someone who takes 2-second draws.