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This combination creates a paradoxical effect: users may feel simultaneously relaxed and focused, an attribute that partly explains its widespread use for stress relief

This option is recommended for experienced users with an existing nicotine tolerance

Restlessness : A sense of unease or inability to stay still

Here's a brief snapshot from the NCBI article that specifies blood nicotine levels over time: Cigarettes have low absorption rates and only last 5 minutes, which leads to a sharp rise in cotinine levels and a stable drop afterwards

Dipping in the upper lip is unusual, though when done, it is colloquially termed an "upper decker" or "top lip dip"