Moderate to severe challenges and punishments.
A lot of challenges and especially punishments, don't go into any mild territory, ( if so, they're rare ). A lot of punishments are based around throwing gross things at someone, touching gross things, or even making them eat the worst things.
Challenges are atleast a bit tamer, but some revolve on the same level as punishments: Some revolve on drinking/eating gross things, doing things blind-folded, and more. Not as bad as the punishments in terms of intensity, but boy oh boy can it be in violence.
It must be mentioned that most challenge and especially punishments, can make a viewer throw up.