号称“一按就清醒” ，“电子咖啡手环”是真科技还是伪概念？

Core Viewpoint - The "electronic coffee bracelet" claims to provide a wakefulness effect through electrical stimulation without caffeine, but experts emphasize the lack of scientific evidence supporting its efficacy and potential risks for individuals with underlying health conditions [1][8]. Product Overview - The electronic coffee bracelet resembles a typical smartwatch and operates by stimulating nerves when worn on the inner wrist, marketed for use during fatigue-inducing activities such as driving, working late, studying, and attending lectures [3]. - The product is priced between hundreds to thousands of yuan on e-commerce platforms, but sales volume remains low. User reviews are polarized, with some praising its effectiveness while others express skepticism [3][5]. Expert Opinions - Medical professionals, such as Dr. Wang Wei from Nanjing Second Hospital, indicate that while electrical stimulation has medical applications, its promotion as a daily wakefulness tool may be misleading. The effectiveness of such devices lacks rigorous clinical validation [8]. - The parameters for electrical stimulation, including current strength, frequency, and waveform, must be strictly controlled for therapeutic effects, which consumers cannot easily assess in commercial products [8]. - Individual responses to electrical stimulation vary significantly, and certain populations, such as those with heart conditions or pregnant women, should avoid using these devices due to potential risks [8][9]. Health Implications - Experts assert that fatigue is a natural signal from the body, and the only effective remedy is rest. Relying on stimulants, whether coffee or electronic devices, merely masks the underlying need for recovery and may lead to deeper fatigue once the effects wear off [9].