This most likely is not relevant to readers who are primarily interested in muscle growth - but two observations (almost entirely anecdotal, sorry) that might be useful for some.

1. First, the non-anecdotal part. Though I'm a lifelong cardio + strength training exerciser, my primary interest shifted to lowering blood pressure about 20 years ago when I turned 50 and discovered my usual 130-80 readings had skyrocketed to 160-100. As far as I know, the research is almost unanimous on cardio being excellent for lowering high blood pressure. It's been fascinating for me to see, in the past 5 years or so, researchers coming to agree that moderate level cardio may even be better for BP than high intensity.

2. Anecdotal. Whether it's been to lose a few extra pounds or lower BP further, no matter what I did in terms of eating (less calories, lower carb, more vegetables, etc) I've consistently found when I simply add 2-3 longer cardio sessions a week (about usually do 30-40 minutes; so doing up to an hour at a time 2x a week) the extra pounds come off and the BP goes down at least a few points.

So #2 is just personal, but it goes against so much of what we consider solid research (it surprised me, that's for sure!) that I just thought I'd add it to remind folks - use the research wisely but always take into account you're going to have your own unique responses to whatever you do in terms of diet and exercise.