the.com/heart rate
the number of times your heart nags you into staying alive per minute.
means the count of heartbeats per minute, a real-time readout of how hard your body is working right now.
from physicians have counted pulses for millennia, but the term heart rate got precise once the stethoscope (1816) and later ECG (1901) let doctors clock beats instead of just feeling them.
resting range60 to 100 bpm is normal for adults
athlete heartselite endurance athletes can rest below 40 bpm
blue whalebeats only 2 times per minute underwater
hummingbirdheart can hit 1200 beats per minute in flight
for instance
resting bradycardia — tour de france cyclists often clock 30-40 bpm at rest
max heart rate test — 220 minus age formula, used in gyms worldwide since the 1970s
fetal heart monitor — tracks 110-160 bpm in the womb to check distress
apple watch alerts — flags sustained rates over 120 or under 40 bpm at rest