Coffee is a daily ritual for millions, but new medical insights suggest that timing may be just as important as how much you drink. Cardiologists are warning that consuming coffee at the wrong time of day can quietly strain the heart — and most people don’t even realize they're doing it.

Why Timing Matters for Heart Health

Caffeine stimulates the central nervous system and increases heart rate. While this effect is normal in moderate amounts, drinking coffee when your body is already under stress can amplify cardiovascular strain. Researchers note that consuming coffee during periods of natural cortisol spikes — such as immediately after waking — may overwork the heart and raise blood pressure more than usual.

The Mistake Most People Make

About 90% of adults drink coffee first thing in the morning, often within minutes of getting out of bed. However, experts explain that this is when cortisol, the “alertness hormone,” is at its peak. Adding caffeine at this moment may:

• Increase heart rate more sharply

• Trigger palpitations in sensitive individuals

• Elevate blood pressure

• Cause energy crashes later in the day

For people with underlying heart issues, this habit can be even more harmful.

When Should You Drink Coffee Instead?

Doctors recommend drinking coffee about 1–2 hours after waking, when cortisol naturally drops. This timing gives a smoother energy boost without overstimulating the heart.

Who Should Be Especially Careful?

• People with hypertension

• Those prone to palpitations or arrhythmias

• Individuals dealing with chronic stress or anxiety

• Anyone with a family history of heart disease

A Small Adjustment With Big Benefits

Simply shifting your coffee time can reduce cardiovascular strain and stabilize energy levels throughout the day. It’s an easy change, but one that could have meaningful long-term benefits for heart health.