

Why do you often need to use the toilet after drinking coffee?
Coffee can cause a rapid urge to have a bowel movement because it stimulates the colon and strengthens the body’s normal digestive reflexes.


Why does your mouth become dry when you are nervous?
Dry mouth during nervousness occurs because the stress response changes saliva production, breathing, and attention to sensations in the mouth.


Why can you feel more awake right before bedtime?
You can feel more awake right before bedtime because circadian rhythm, light, stress, and stimulation can work against sleep pressure.






