I’ll go first. After your turn the water off in the shower but before you get out, use your hands to wipe off any standing water on your body. Maybe even give your legs a bit of a shake. This way, you won’t drip nearly as much when you get out, keeping the floor and your towel drier.
Data on flossing is actually quite limited. It’s not harmful, but many people can maintain healthy teeth without regular flossing. Depending on your saliva production and tooth spacing, some may benefit more than others from this.
A lot of people change their car oil too often based on pre-synthetic era oil change recommendations and car shop and oil manufacturer recommendations.