You'll lose weight since almost no food will be provided, and there will be nothing with protein. Sure we may use guilt if you don't get involved, but once you believe, we will use threats. They will be real or theological, like god will strike you down, or you'll be eternally damned to hell. Hopefully you will be a little more careful when meeting people who are just too friendly, or joining any group activity if you don't know who they are. You have to protect yourself, because what these groups are doing is legal, so they can't be barred from campus.
Cults imitate legitimate organizations to try to get new members.
One group in particular poses as a fraternity. I know members of the some of these groups, and they are very normal people. Anyone can get involved in groups that exhibit cult like behavior. These groups can be religious, political, business, or environmental in nature. Cults are not always religious, but they almost always try to run your life through subtle manipulation.