I like the band! But yes, the placebo effect is very real. So is COVID-19: 'Even if people are not at high risk of Covid themselves, their friends or family could be.'. So, even if you are immune yourself, you could still infect others when you're a carrier. I'm not willing to take that risk and will do anything to lower it, because I do not only care about myself. Here's more: https://www.nytimes.com/2020/12/05/health/covid-natural-immunity.html