system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why can my heartbeats sometimes shake my entire body with each throb at 110bpm but not feel the same when my heart rate is 150bpm or higher?
gpt
Except at extremes, heart rate plays into pulse strength less than blood pressure does. While higher blood pressures can cause more noticeable heartbeats, the strength of a heartbeat/pulse is also largely dependent on something called the pulse pressure - the difference between the top blood pressure number (pressure while the heart beats) and the bottom blood pressure (pressure between beats).  If the arterial pressure while the heart contracts is close to the pressure while it’s at rest, the heart beat (pulse) will be less obvious. Think for example, 105/85. But if each heart beat raises the pressure a lot relative to the resting/diastolic pressure, then the pulse is stronger, ie. 140/60.