A good resting heart rate for adults falls between 60 and 100 beats per minute (bpm), with lower values generally indicating better cardiovascular fitness. Well-trained athletes can have resting heart rates as low as 40 bpm, and even below 30 bpm in rare cases, without any health concerns. Where you land in that range depends on your age, fitness level, and several daily variables like caffeine intake and stress.
Resting Heart Rate by Age
The 60 to 100 bpm range applies to adults and adolescents aged 13 and older. Children and infants have naturally faster hearts. Newborns range from 100 to 205 bpm, infants settle between 100 and 180, toddlers between 98 and 140, and school-age children between 75 and 118. These rates reflect waking, resting conditions. Sleep typically lowers them, and any physical activity raises them.
For adults, a resting heart rate in the 60s or low 70s is a sign of solid cardiovascular health. If yours sits closer to 90 or 100, it’s still within the normal range, but bringing it down through regular exercise tends to improve long-term heart health. Once your resting rate consistently exceeds 100 bpm, that’s classified as tachycardia. Below 60 bpm is technically bradycardia, though for many fit people this is perfectly normal rather than a problem.
What a Low Heart Rate Means for Athletes
Endurance training reshapes the heart. It becomes more efficient at pumping blood, so it doesn’t need to beat as often at rest. A study of 465 endurance athletes found that 38% had minimum heart rates at or below 40 bpm on a 24-hour monitor. About 2% dropped to 30 bpm or lower. Over a follow-up period of 5.5 years, neither the low heart rates nor brief pauses in rhythm were associated with any increased health risk.
If you’re physically active and your resting heart rate lands in the 40s or 50s, that’s generally a marker of fitness rather than a cause for concern. The distinction matters when a low heart rate comes with dizziness, fainting, or unusual fatigue, which can signal an electrical problem in the heart unrelated to fitness.
What Affects Your Resting Heart Rate Day to Day
Your resting heart rate isn’t a fixed number. It shifts based on what’s happening in your body on any given day. Caffeine is one of the most common influences. Consuming more than 400 mg daily (roughly four cups of coffee) has been shown to raise both heart rate and blood pressure in a way that persists even after resting. People who consume over 600 mg daily show even more pronounced and lasting elevations. Dehydration, heat, poor sleep, and emotional stress all push your resting rate higher too. Alcohol and certain medications can swing it in either direction.
For the most accurate reading, check your heart rate first thing in the morning before getting out of bed, before coffee, and after a decent night’s sleep. Track it over a week or two rather than relying on a single measurement. The trend matters more than any one reading.
Target Heart Rate During Exercise
A “good” heart rate during a workout depends on how hard you’re trying to push. The American Heart Association breaks it into two zones based on your estimated maximum heart rate:
- Moderate intensity: 50% to 70% of your maximum heart rate. This is a brisk walk, easy cycling, or a pace where you can hold a conversation but feel your breathing pick up.
- Vigorous intensity: 70% to 85% of your maximum. Running, fast cycling, or high-intensity interval work. Talking becomes difficult.
To estimate your maximum heart rate, the most commonly cited formula is 220 minus your age. A more accurate version, developed from a large meta-analysis, uses 208 minus 0.7 times your age. The older formula tends to underestimate maximum heart rate in people over 40, which means it can also underestimate appropriate exercise intensity. For a 50-year-old, the classic formula gives a max of 170 bpm, while the updated one gives 173. The gap widens with age.
As a practical example, a 40-year-old using the updated formula would have an estimated max of 180 bpm. Moderate exercise for that person would target roughly 90 to 126 bpm, and vigorous exercise would target 126 to 153 bpm.
Heart Rate Recovery: A Hidden Fitness Marker
How quickly your heart rate drops after you stop exercising is one of the strongest indicators of cardiovascular fitness, and it’s one most people never check. After finishing a hard effort, stop and measure your heart rate, then measure it again one minute later. A drop of 18 beats or more in that first minute is considered good recovery. The faster your heart rate falls back toward baseline, the more efficiently your autonomic nervous system is working.
Poor heart rate recovery, where your pulse barely budges in that first minute, has been linked to higher cardiovascular risk in multiple studies. It’s worth tracking alongside your resting rate if you’re using exercise to improve your heart health, because recovery speed often improves before resting heart rate does, giving you an earlier signal that your fitness is progressing.