The accountability is key, too. Joining a gym you can go whenever you want -- which also means you can not go whenever you don't want. If people are relying on

The accountability is key, too. Joining a gym you can go whenever you want -- which also means you can not go whenever you don't want. If people are relying on you for their morning bagels, you don't have an option, and removing the choice to opt-out can be crucial.