Biohackers and wellness influencers tout nicotine as part of their performance-enhancing "stacks." As smoking rates in the U.S. decline, startups and influencers are promoting the supposed cognitive and health benefits of nicotine. Biohacking is a way to take control of your body and mind to promote personal development and productivity. Nicotine stimulates the nervous system, promotes the release of dopamine and improves attention and speed of thinking in the short term. Biohackers use it in small doses much like caffeine to boost performance. Nicotine sachets are easy, quick and available without smoke, smell or the need to hide. In the biohacking community, they are seen as a tool for better concentration, similar to coffee or green tea.[1]