Everybody does it – and now doctors have revealed the best time for that bathroom break.
Maintaining a consistent schedule for bowel movements is more critical for digestive health than the specific time of day, though the morning hours offer distinct physiological advantages, according to gastroenterologists.
Medical experts say that a “normal” bathroom frequency can range anywhere from three times a week to twice daily, but the body’s internal clock often makes the period shortly after waking the most efficient window for digestion.
“Similar to nearly all other life on this planet, our body functions on a rhythm that aligns with the rise and fall of the sun,” Dr. Will Bulsiewicz, a South Carolina-based gastroenterologist, told EatingWell. He noted that a rhythmic gut prevents issues such as chronic constipation or irritable bowel syndrome.
Dr. Kenneth Brown, a gastroenterologist in Plano, Texas, told the outlet that three primary factors make the morning an ideal time for most individuals.
First, the body’s circadian rhythms play a significant role, as the colon is naturally more active during the day with peak activity occurring in the morning. This period also coincides with a natural rise in cortisol levels, which can further stimulate the bowels.
Additionally, the body benefits from overnight accumulation. The digestive system remains relatively inactive during sleep to allow the colon to fill, but this activity resumes immediately upon waking.
The morning also coincides with the peak of the gastrocolic reflex. This natural response causes the colon to contract after eating or drinking, especially following a first glass of water or breakfast.
Physical activity and diet also play significant roles in regularity. Bulsiewicz explained that exercise stimulates motility, and Brown cautioned that dehydration can lead to harder stools as the colon absorbs more water from waste.
Other factors that can disrupt these natural rhythms include travel, which affects the internal clock, and high stress levels, which impact the gut-brain axis. Medical conditions such as hypothyroidism or diabetes, certain medications such as opioids, and physiological changes during pregnancy or aging can also alter stool frequency.
To establish a regular routine, experts suggest “coaching” the body by sitting on the toilet for five minutes consistently after breakfast and morning coffee. Health professionals also recommend a daily intake of 25 to 30 grams of fiber and at least 30 minutes of moderate-intensity exercise to support gut motility.
Bulsiewicz told EatingWell that daily movements are a common goal, but “adequate regularity” and complete emptying are more important than adhering to a rigid frequency.
Experts advise consulting a healthcare provider if bowel habits change suddenly or if constipation and diarrhea persist for more than two weeks.
