After more than 20 years of treating patients dealing with heart disease, clogged arteries, and metabolic disorders, cardiologist Dr. Sanjay Bhojraj has come to a striking conclusion: what you do in the evening matters just as much as what you do during the day. He explains that heart disease develops over years and is shaped by blood pressure, inflammation, blood sugar levels, and sleep quality. Evening routines, he argues, can either help the body recover or keep it locked in a state of chronic stress. With that in mind, Dr. Bhojraj has identified seven specific habits he consciously avoids after 7 PM.
The first thing he steers clear of is eating late. He points out that the body’s metabolism follows a circadian rhythm, making it far less efficient at processing sugars and fats in the evening hours. “In the evening hours, insulin sensitivity drops,” he told CNBC. Late-night meals have been linked to elevated post-meal blood sugar levels and increased inflammation, and nighttime digestion can also interfere with the recovery processes that keep blood vessels healthy.
He also avoids bright and cool-toned lighting after dark, explaining that exposure to intense light in the evening can suppress melatonin production. “Melatonin plays an important role in regulating sleep and blood pressure,” he notes. Disrupting those natural nighttime processes can have a ripple effect on heart health, which is why he recommends switching to warmer, softer light sources as the evening progresses. This small environmental tweak, he says, can make a meaningful difference over time.
Stressful television content is another item on his evening avoidance list. The body, he warns, does not distinguish between real-world stress and the kind experienced while watching a tense program. “Your nervous system doesn’t know that it’s just a show,” he explains. That kind of stimulation can raise both heart rate and blood pressure, and even short bursts of stress have the potential to negatively affect blood vessels and overall cardiac health. He recommends winding down with calmer, less emotionally charged content instead.
Intense exercise late at night is something else Dr. Bhojraj avoids, despite being a firm advocate for physical activity in general. “Intense workouts late in the evening can delay sleep,” he says, adding that vigorous activity can keep the body in a heightened stress state and elevate heart rate well into the night. That reduced recovery quality has direct consequences for heart health, since restorative sleep is when the cardiovascular system does much of its repair work. He suggests moving demanding workouts to earlier in the day whenever possible.
Alcohol in the evening is also on his list, even though many people reach for a drink precisely to unwind. He cautions that despite its reputation as a relaxant, alcohol actually works against good sleep. “Alcohol disrupts sleep architecture and reduces REM sleep,” he points out, and it can simultaneously raise heart rate and affect blood pressure. Over time, those nightly disruptions add up and may meaningfully increase cardiovascular risk. Emotionally charged conversations before bed are similarly something he avoids, since stress and anger trigger hormonal responses that place real strain on the heart. “Stress and anger can have real consequences for the heart,” he says, advising that difficult discussions be saved for earlier in the day.
Finally, Dr. Bhojraj limits his evening screen time on phones and televisions. “Blue light delays melatonin release,” he explains, which can push back sleep onset and chip away at sleep quality night after night. Over the long term, chronically disrupted sleep raises the risk of high blood pressure and other cardiac problems, making screen discipline one of the simplest yet most impactful changes a person can make.
Heart disease remains the leading cause of death in the United States, responsible for roughly one in five deaths each year according to the Centers for Disease Control and Prevention. The circadian rhythm, which governs the body’s internal clock, is a 24-hour biological cycle that regulates not only sleep but also hormone release, metabolism, and cardiovascular function. Research has increasingly shown that the timing of eating, light exposure, and activity plays a significant role in long-term health outcomes, a field of study known as chronobiology. Melatonin, a hormone produced by the pineal gland in response to darkness, is widely recognized for its role in sleep regulation, but emerging evidence also points to its involvement in blood pressure control and anti-inflammatory processes. REM sleep, the stage of sleep most disrupted by alcohol, is essential for memory consolidation and emotional regulation, and insufficient REM has been associated with increased stress reactivity and cardiovascular strain.
If these evening habits have you rethinking your nighttime routine, share your thoughts and your own wind-down rituals in the comments.
