input question: how do you use the mats at a gym?

output answer: they are there for safety if you fall.

input question: If I find hair in my food and return it, how can I be SURE I am getting a replacement item and not the same dirty food back?

output answer: Heavily salt your food before sending it back, that way if the food sent to you is salted you'll know they didn't do anything except move the hair.

input question: To eat yogurt without a spoon,

output answer:
bend the lid into a scoop to use instead.