This is actually another action that isn’t advised. Most toothpastes work (in terms of protecting your enamel) by causing a reaction between certain compounds with calcium and magnesium in them, and your saliva, to deposit them onto the enamel on your teeth, remineralising them. Rinsing your mouth with water after you’ve brushed your teeth dilutes the useful compounds in your mouth and the anti microbial agents, making it much less effective at protecting your tooth/gum health. You can just spit out the excess from brushing and go about your day.
This is actually another action that isn’t advised. Most toothpastes work (in terms of protecting your enamel) by causing a reaction between certain compounds with calcium and magnesium in them, and your saliva, to deposit them onto the enamel on your teeth, remineralising them. Rinsing your mouth with water after you’ve brushed your teeth dilutes the useful compounds in your mouth and the anti microbial agents, making it much less effective at protecting your tooth/gum health. You can just spit out the excess from brushing and go about your day.