I'm looking for data of MHR vs. age. Trying to (informally) confirm that those who maintain fitness see less of a drop in MHR as they age compared to sedentary folks. Of particular interest would be anyone who took a hiatus from riding (became sedentary) for some years, then resumed riding and has long term data. Those who have been riding for many years and have tracked their MHR will be my new best friends. The more data the better.