The Nicotine Pre-Workout Craze: Why Fitness Influencers Are Wrong About ‘Locking In’ With Pouches

In the high-octane world of modern fitness, the quest for the ultimate "edge" has led athletes down a path of increasingly fringe supplementation. From the historical use of smelling salts to the contemporary obsession with caffeine-laden energy drinks that push the boundaries of heart safety, the "pre-workout" ritual has become a cornerstone of gym culture. However, as we move through 2026, a new and highly controversial substance has infiltrated the locker rooms and social media feeds of the fitness elite: nicotine. Once relegated to the shadows of tobacco use and viewed primarily as a vice, nicotine is now being rebranded as a "nootropic" and performance enhancer, delivered through discreet, tobacco-free pouches. While influencers claim these products help them "lock in" and achieve new personal records (PRs), a growing chorus of cardiologists, exercise physiologists, and medical researchers are sounding the alarm, warning that this trend is a dangerous physiological gamble that prioritizes a temporary "buzz" over long-term cardiovascular health and athletic longevity.

The surge in nicotine’s popularity within the fitness community is not accidental; it is the result of a convergence between "biohacking" culture and the aggressive marketing of synthetic nicotine products. High-profile fitness influencer Will Tennyson, who commands a following of over one million on Instagram, recently catalyzed this conversation by sharing his experiences with nicotine pouches on YouTube. Tennyson described a sensation of being "locked in" during his heavy lifting sessions, a sentiment echoed by various "fit-fluencers" who equate the stimulant’s sharp onset with increased mental clarity and aggression. The endorsement doesn’t stop at social media personalities. Celebrity trainer Jillian Michaels has publicly discussed the potential cognitive benefits of nicotine, suggesting that when used strategically and under medical supervision, the substance can serve as a tool for focus. Even within the highest echelons of public health policy, the trend is visible. Robert F. Kennedy Jr., the U.S. Secretary of Health and Human Services and a central figure in the "Make America Healthy Again" (MAHA) movement, has been frequently associated with the use of ZYN, one of the most popular brands of nicotine pouches. This high-level visibility has lent an air of legitimacy to a product that medical experts insist is far from a harmless health hack.

To understand why athletes are gravitating toward nicotine, one must look at the body’s sympathetic nervous system. During a workout, the body naturally enters a "fight-or-flight" state. Adrenaline surges, the heart rate climbs, and blood is diverted to the skeletal muscles to facilitate movement and power. Nicotine acts as a potent stimulant that mimics and amplifies this response. Tina Lankarge, an exercise physiologist and tobacco treatment specialist at Boston Medical Center, notes that nicotine triggers immediate spikes in heart rate and blood pressure. For a lifter standing in front of a 500-pound barbell, this artificial "jolt" can feel like a surge of readiness. Furthermore, some neurobiological research suggests that nicotine can temporarily sharpen motor skills, improve short-term memory, and enhance attention by binding to nicotinic acetylcholine receptors in the brain. For many, this translates to a feeling of being "in the zone," where the distractions of the gym fade away and only the weight remains.

However, medical professionals warn that this "feeling" of readiness is a dangerous physiological illusion. Dr. Andrea Jonas, a pulmonary and critical care physician at Stanford University, argues that nicotine is essentially "gaslighting" the athlete’s brain. While the user may feel more focused, the drug is simultaneously sabotaging their physical capacity. One of the primary concerns is nicotine’s effect on cardiac contractility—the force with which the heart muscle contracts. Nicotine increases the heart’s demand for oxygen at the very moment the body needs that oxygen for physical exertion. Furthermore, nicotine is a known vasoconstrictor, meaning it causes blood vessels to narrow. In the context of weightlifting, where "the pump" (increased blood flow to the muscles) is often a goal for both aesthetics and nutrient delivery, nicotine works in direct opposition to the body’s needs. By constricting blood vessels, nicotine can diminish overall exercise output and make it significantly harder for the heart to pump blood efficiently, particularly in individuals with underlying, perhaps undiagnosed, cardiac conditions.

The long-term risks extend beyond a subpar workout. The combination of intense physical strain and a potent vasoconstrictor like nicotine creates a perfect storm for cardiac arrhythmias—irregular heartbeats that can, in extreme cases, lead to sudden cardiac arrest. "Nicotine will actually diminish people’s exercise outputs," Dr. Jonas explains, noting that the perceived boost in attention does not translate to improved muscular endurance or power output. Instead, the athlete is placing an unnecessary burden on their cardiovascular system, forcing the heart to work harder to achieve the same, or even lesser, results. This creates a paradoxical situation where the "performance enhancer" is actually a performance inhibitor that increases the risk of long-term heart damage.

Another significant concern is the "tobacco-free" labeling that accompanies many of these products. Brands like ZYN and their competitors often market themselves as a "clean" alternative to cigarettes because they do not contain tobacco leaf. However, Dr. Jonas and other experts caution that "tobacco-free" is a marketing term, not a health claim. These products contain synthetic nicotine created in a lab, which is chemically identical to the nicotine found in tobacco plants. The health risks associated with nicotine—addiction, cardiovascular strain, and potential developmental effects on the brain—remain exactly the same. Moreover, because these pouches are relatively new to the market, they contain a variety of flavorings, sweeteners, and pH-adjusting agents that have not been extensively studied for long-term safety, especially when used in the high-heat, high-stress environment of an intense workout.

The psychological trap of nicotine is perhaps its most insidious feature. Nicotine is one of the most addictive substances known to man, rivaling heroin and cocaine in its ability to rewire the brain’s reward circuitry. When an athlete begins to associate their best lifts or their most "focused" sessions with the use of a nicotine pouch, they are setting the stage for a powerful psychological and physiological dependency. Over time, the brain stops producing the same level of dopamine in response to exercise alone, requiring the nicotine "kick" to reach a baseline level of motivation. This can lead to a cycle where the athlete feels they cannot train without the substance, further masking the body’s natural signals of fatigue and overtraining.

Instead of reaching for a chemical crutch, exercise physiologists like Lankarge suggest that athletes should look inward to address performance plateaus. If an individual feels they need a stimulant to "get through" a workout, it is often a sign of a deeper issue, such as chronic sleep deprivation, poor nutritional timing, or inadequate recovery. The modern "grind" culture often encourages athletes to push through fatigue at all costs, but masking that fatigue with nicotine only delays the inevitable "crash" and increases the risk of injury. Addressing the root causes of lethargy—such as dehydration, caloric deficits, or the need for a de-load week—will always yield better long-term PRs than a temporary nicotine buzz.

Furthermore, the "biohacking" community often overlooks the fact that the best performance enhancers are free and accessible: proper periodization of training, optimized sleep hygiene, and a balanced diet rich in micronutrients. While a cup of coffee remains a generally accepted and well-studied pre-workout aid due to its antioxidant properties and more manageable stimulant profile, it does not carry the same high-velocity addiction risk or the severe vasoconstrictive profile of concentrated nicotine pouches.

As the fitness industry continues to evolve, the trend of using nicotine as a pre-workout supplement serves as a cautionary tale about the dangers of prioritizing short-term "vibes" over biological reality. The influencers and celebrities promoting these products often fail to mention the cardiovascular strain and the looming threat of addiction that come with every pouch. For the dedicated lifter, the goal should be the fortification of the body, not its systemic degradation. In the race to reach new PRs, nicotine isn’t a shortcut; it’s a detour that leads away from true health and toward a future of dependency and heart strain. The strongest version of an athlete is not one who is "locked in" via a chemical tether, but one who is fueled by discipline, recovery, and a deep understanding of their own physiology. As the medical community continues to study the impacts of synthetic nicotine, the message remains clear: the best way to "make America healthy again" is to leave the pouches out of the gym and focus on the fundamental pillars of fitness that have stood the test of time.