A resting heart rate of 113 beats per minute is above normal and technically qualifies as tachycardia, which is defined as any heart rate over 100 BPM at rest. Whether it’s “bad” depends entirely on context: what you were doing when you measured it, how long it lasted, and whether you have other symptoms. A single reading of 113 is not an emergency on its own, but a consistently elevated resting heart rate in that range deserves attention.
What Counts as a Normal Resting Heart Rate
For most adults, a normal resting heart rate falls between 60 and 100 beats per minute. “Resting” means you’ve been sitting or lying still for at least five minutes, you haven’t just exercised, and you’re not in the middle of something stressful or exciting. If you checked your heart rate right after climbing stairs, drinking coffee, or feeling anxious, 113 BPM may simply reflect your body responding normally to that situation.
The 100 BPM cutoff is somewhat arbitrary. A heart rate of 101 isn’t dramatically different from 99. But 113 sits far enough above the line that it warrants a closer look if you measured it at true rest with no obvious explanation.
Common Reasons Your Heart Rate Hits 113
Plenty of everyday factors can push your resting heart rate into the low 100s without any heart problem being involved:
- Caffeine or stimulants. Coffee, energy drinks, certain cold medications, and ADHD medications are all known to raise heart rate. Over-the-counter asthma inhalers containing stimulant compounds can do the same.
- Dehydration. When blood volume drops, your heart compensates by beating faster to maintain blood flow to your organs.
- Stress or anxiety. Your body’s fight-or-flight response releases adrenaline, which directly speeds up the heart. Even checking your pulse because you’re worried about your pulse can keep the number elevated.
- Fever or illness. Heart rate typically rises about 10 BPM for every degree (Fahrenheit) of fever. A mild infection you barely notice can bump you into the 110s.
- Poor sleep. Sleep deprivation raises baseline heart rate, sometimes significantly.
- Medications. Certain antidepressants (particularly older tricyclic types) list elevated heart rate as a known side effect. Stimulant medications used for ADHD or weight loss do as well.
- Alcohol or nicotine. Both can elevate heart rate for hours after use.
If any of these apply, addressing the underlying cause will likely bring your heart rate back down. Try measuring again after sitting quietly for 10 minutes, well-hydrated, with no caffeine in the past few hours. That gives you a much more accurate baseline.
When 113 BPM Is Expected
During exercise, 113 BPM is completely normal and often on the low side. Your maximum heart rate is roughly 220 minus your age, and moderate exercise targets 50 to 70 percent of that number. For a 50-year-old, the target zone during moderate activity is about 85 to 145 BPM. A 30-year-old exercising moderately would aim for roughly 95 to 133 BPM. So if you noticed 113 on a smartwatch during a walk or light workout, that’s your heart doing exactly what it should.
Standing up quickly can also cause a temporary spike. Some people experience a sustained jump of 30 or more BPM just from going from sitting to standing, a condition called postural orthostatic tachycardia syndrome (POTS). If your heart rate is normal while lying down but consistently climbs past 110 when you stand, that pattern is worth mentioning to a doctor.
When It Could Signal a Problem
A resting heart rate that stays around 113 without an obvious trigger is considered sinus tachycardia, the most common type seen in clinical practice. In many cases the cause is something treatable like dehydration, anemia, thyroid imbalance, or medication side effects. But when the heart beats too fast for too long, it doesn’t have enough time to fill with blood between beats. Over time, this can strain the heart muscle and reduce the oxygen supply reaching your organs.
Untreated, persistent tachycardia can eventually contribute to weakening of the heart muscle, blood clots, or in severe cases, heart failure. These are long-term risks of chronically elevated heart rates, not dangers from a single reading of 113.
There are also less common rhythm disorders where the heart’s electrical system misfires. Supraventricular tachycardia (SVT), for example, typically produces rates of 150 to 220 BPM and comes on suddenly, so a steady 113 is unlikely to be SVT. Still, any heart rate that seems to jump abruptly from normal to fast and then snap back is worth investigating regardless of the exact number.
Symptoms That Make It More Urgent
The heart rate number alone tells only part of the story. What matters just as much is how you feel. A heart rate of 113 with no symptoms at all is very different from 113 accompanied by chest pain, shortness of breath, dizziness, lightheadedness, fainting, or unusual fatigue. Any of those combinations suggests your heart isn’t circulating blood effectively at that rate and needs evaluation soon.
Palpitations, where you feel your heart pounding, fluttering, or skipping, are another signal to pay attention to. Occasional palpitations are common and usually harmless, but palpitations paired with a consistently high rate are worth investigating.
How Doctors Evaluate a Fast Heart Rate
If your resting heart rate is repeatedly above 100, a doctor will typically start with an electrocardiogram (ECG), a quick, painless test that records your heart’s electrical activity through sticky patches on your chest. This can reveal whether the rhythm is normal sinus rhythm (just faster than usual) or something more concerning like an abnormal electrical pattern.
If a standard ECG looks fine but symptoms come and go, you may be asked to wear a portable heart monitor. A Holter monitor records continuously for 24 to 48 hours, while an event monitor can be worn for about 30 days and captures data when you press a button during symptoms or when it detects an irregularity automatically. Some smartwatches now offer basic ECG readings that can provide useful initial data.
Blood work is common too, since thyroid disorders, anemia, and infections all elevate heart rate and are easily identified through routine labs. An echocardiogram, which uses ultrasound to visualize the heart’s structure and blood flow, may be ordered if there’s concern about heart muscle function. More specialized tests like electrophysiology studies or cardiac imaging are reserved for cases where simpler tests haven’t provided a clear answer.
What You Can Do Right Now
Before worrying too much about a single reading, take your resting heart rate properly: sit quietly for at least five minutes, place two fingers on the inside of your wrist, and count beats for a full 60 seconds. Do this at different times of day over several days. If you’re consistently seeing numbers above 100 at true rest, that pattern is meaningful and worth discussing with a healthcare provider.
In the short term, staying hydrated, cutting back on caffeine, managing stress, and getting adequate sleep can all help lower a mildly elevated heart rate. Regular aerobic exercise, somewhat counterintuitively, lowers your resting heart rate over time by making each heartbeat more efficient. Even moderate activity like brisk walking, done consistently, can bring resting rates down by several beats per minute over weeks to months.
A single measurement of 113 is not a crisis. A persistent pattern of 113 at true rest, especially with symptoms, is your body telling you something needs attention.