SUNRISE
HEARTBEAT CHRONICLES

Ever noticed your heart beating a little faster than it used to after climbing the same flight of stairs? Or wondered why your smartwatch keeps flagging numbers that felt normal a few years ago? Heart rate naturally changes across a lifetime. What may be typical in your twenties often differs from what may be typical in your fifties or seventies. Because these changes can happen gradually, they are easy to miss until something feels different from before. This article explain