Taking bets:

• Participating in a competitive event where bathroom breaks are minimal or non-existent, such as a long-distance, multi-day gaming or eSports tournament.
• Attending a religious or spiritual retreat where fasting or avoiding certain bodily functions is part of the practices or rituals.
• Engaging in a survival challenge or a bet where the person has to limit food intake and avoid defecating for a certain period of time.
• Undergoing a specific medical procedure or test that requires limiting food intake and avoiding bowel movements for a few days.
• Participating in a scientific experiment or study where they have to control their diet and bowel movements.
• Partaking in a performance art piece or protest where he's limiting his bodily functions as part of the statement.
• Attending an event (like a music festival or convention) where bathroom facilities are notoriously unclean or inconvenient, and they want to avoid using them as much as possible.
• Embarking on a long journey where bathroom facilities may not be readily available or convenient, such as a cross-country road trip or sailing expedition.
• Participating in a reality TV show or film production where bathroom breaks are limited or inconvenient.
• Engaging in a personal challenge or self-imposed discipline practice related to endurance or minimalism.