Has anyone tried putting a band aid over your belly on to prevent motion/sea sickness? Or wristbands?

Well, I tried the motion sickness wristband when i went on a trip. If im in a car too long, like a van or bus i get motion and car sickness and the wristband worked, i just kept thinking the whole ride, "how does a wristband prevent this?"" lol. My sister also used them when she was pregnant and saved her alot of morning sicknesses. So I would go with the wristband... it's more convenient.