Is Strength Training Bad for Your Heart?

It’s Valentine’s Day. On this day about love, it only makes sense to talk about your heart.

Are you one of those guys (or gals) that only does strength training and skips out on cardio? Perhaps you’re going for muscle size, and you’re afraid that the cardio is going to kill, limit or reverse your muscle growth. (This, by the way, is a misconception.) It happens all the time. I’ve seen a number of serious gym enthusiasts pass by the treadmills and exercise solely in the weight room.

Be Warned: Turns out, doing strength training and skipping cardio is actually bad for your heart.

Researchers from the University of Austin spent a great deal of time studying the effects of intense strength training. After a good weight lifting session, there’s a good chance that your body will be sore; soreness generally peaks at about 48-hours after the workout. If you were to examine your sore muscles under a microscope, you’d notice inflammation. Researchers discovered that this inflammation causes increased arterial stiffness – which is not good for blood vessels and arterial health. And although weight training does also provide heart-healthy benefits, the arterial stiffness is something worth paying attention to.

Doing cardiovascular exercise reduces this inflammation. So, hit the weight room hard – but make some time to spend on the cardio machines, too. Hopefully, this study will be a real eye-opener for those people who think it’s okay to skip out on the cardio.

About Davey Wavey

Davey Wavey is a certified personal trainer and YouTube sensation with more than 250 million video views. For Davey's fitness tips and secrets, sign up for his free monthly newsletter - or download any of his affordable and effective workout programs.


  1. Hey Davey
    I was wondering you if could do a session about swimming and all the pro’s and con’s.



  2. sigh… fine, I’ll get back into cardio..

  3. That is soooo funny Teresa! I saw her yesterday at the gym and told her about knnowig you, and we were cracking-up over what a small world we live in. Anyway, thanks for the comment love Girlie! I’m so excited about your sister’s news. I hope there is an event coming up that I will get to see you at


  1. […] and in many ways the cardio will complement and improve your performance in the weight room – not to mention overall health. And don’t worry: Moderate cardio does not result in muscle […]

  2. […] Continue with moderate cardio. Almost no one should be doing cardio for durations in excess of 45 minutes (it starts breaking down muscle at around that point – which can actually slow down your metabolism), but especially someone looking to increase muscle size. I’d recommend doing short but powerful 15-minute interval sessions. Don’t overdo it, but don’t skip it either. […]