This may be a strange angle to take, but I think those “energy wristbands” that were a mild craze a while ago can be considered a general wellness product. These were ordinary bracelets that were advertised to give you more energy throughout the day. They’ve obviously been debunked in their efficacy, but for the many people that bought into it, it arguably gave them a strong placebo effect. This itself can be a huge boon, even it’s not the effect it was advertised to give.