Answer:
They can be symptomless and often go overlooked and untreated.
Explanation:
Since there are no options listed to choose from, my best guess would be watches, since a lot of apple watch products are now sold with built in heart monitors.
Bulimia? Im pretty sure because after eating you throw up with this disorder.
Remove the hair where the pads will be placed.
Post the picture in the comments because I don’t think your picture uploaded