{"id":5510,"date":"2026-09-29T05:51:35","date_gmt":"2026-09-29T09:51:35","guid":{"rendered":"https:\/\/naturallyintense.net\/blog\/?p=5510"},"modified":"2026-09-29T08:24:06","modified_gmt":"2026-09-29T12:24:06","slug":"does-cardio-hurt-muscle-growth-natural-lifters","status":"publish","type":"post","link":"https:\/\/naturallyintense.net\/blog\/natural-bodybuilding\/does-cardio-hurt-muscle-growth-natural-lifters\/","title":{"rendered":"Does Cardio Hurt Muscle Growth? What I Saw Training Natural Lifters"},"content":{"rendered":"\n<p>\u00a0<\/p>\n<\/div>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"epyt-video-wrapper\"><div  id=\"_ytid_38522\"  width=\"696\" height=\"392\"  data-origwidth=\"696\" data-origheight=\"392\"  data-relstop=\"1\" data-facadesrc=\"https:\/\/www.youtube.com\/embed\/GKSmfCbC0xo?enablejsapi=1&#038;autoplay=0&#038;cc_load_policy=1&#038;cc_lang_pref=&#038;iv_load_policy=1&#038;loop=0&#038;rel=0&#038;fs=1&#038;playsinline=0&#038;autohide=2&#038;theme=dark&#038;color=red&#038;controls=1&#038;disablekb=0&#038;\" class=\"__youtube_prefs__ epyt-facade  epyt-is-override  no-lazyload\" data-epautoplay=\"1\" ><img decoding=\"async\" data-spai-excluded=\"true\" class=\"epyt-facade-poster skip-lazy\" loading=\"lazy\"  alt=\"YouTube player\"  src=\"https:\/\/i.ytimg.com\/vi\/GKSmfCbC0xo\/maxresdefault.jpg\"  \/><button class=\"epyt-facade-play\" aria-label=\"Play\"><svg data-no-lazy=\"1\" height=\"100%\" version=\"1.1\" viewBox=\"0 0 68 48\" width=\"100%\"><path class=\"ytp-large-play-button-bg\" d=\"M66.52,7.74c-0.78-2.93-2.49-5.41-5.42-6.19C55.79,.13,34,0,34,0S12.21,.13,6.9,1.55 C3.97,2.33,2.27,4.81,1.48,7.74C0.06,13.05,0,24,0,24s0.06,10.95,1.48,16.26c0.78,2.93,2.49,5.41,5.42,6.19 C12.21,47.87,34,48,34,48s21.79-0.13,27.1-1.55c2.93-0.78,4.64-3.26,5.42-6.19C67.94,34.95,68,24,68,24S67.94,13.05,66.52,7.74z\" fill=\"#f00\"><\/path><path d=\"M 45,24 27,14 27,34\" fill=\"#fff\"><\/path><\/svg><\/button><\/div><\/div>\n<\/div><\/figure>\n\n\n\n<p>For years, I assumed adding cardio to a weight-training program would help my clients get leaner faster. They would burn more calories, improve their endurance, and continue building muscle. It sounded perfectly logical.<\/p>\n\n\n\n<p>But after decades of coaching, I kept noticing a pattern I hadn&#8217;t expected. Clients who added dedicated, <a href=\"https:\/\/naturallyintense.net\/blog\/exercise\/rethinking-the-need-for-cardio\/\">steady-state cardio<\/a> on their recovery days could still make progress. Often, though, they didn&#8217;t progress as well as clients who recovered between their weight-training sessions. Their strength rose more slowly, their muscular development was less impressive, and I didn&#8217;t consistently see better fat-loss results.<\/p>\n\n\n\n<p>That observation changed how I think about the question <em>\u201cDoes cardio hurt muscle growth?\u201d<\/em> The answer depends on <strong>what you are training for, how hard you already train, and how well you recover.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-the-goal-changes-the-answer\">The goal changes the answer<\/h2>\n\n\n\n<p>I&#8217;ve trained natural bodybuilders, marathon runners, triathletes, and endurance cyclists. It would make no sense to tell a marathon runner to stop running. Running is the goal. A cyclist needs time on the bike, and a triathlete needs to swim, cycle, and run.<\/p>\n\n\n\n<p>In fact, some of the endurance athletes I&#8217;ve worked with have found that our short, demanding strength workouts helped their performance. One distance cyclist stopped cycling during his off-season and trained with me three times per week. When he returned to the road, his times improved. That&#8217;s his experience, not proof that cyclists should give up riding: the sport still requires practice.<\/p>\n\n\n\n<p>Now consider someone with a different goal: <em>\u201cI want to build as much muscle as I can naturally while staying lean.\u201d<\/em> For that person, extra cardio is no longer practice for an endurance event. It is another training session that has to earn its place in the program.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/results-from-steady-state-cardio-with-hit-training-1024x576.png\" alt=\"graphic showing less muscle mass gain and less fat loss from cardio with high intensity training for natural lifters\" class=\"wp-image-5512\" srcset=\"https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/results-from-steady-state-cardio-with-hit-training-1024x576.png 1024w, https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/results-from-steady-state-cardio-with-hit-training-300x169.png 300w, https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/results-from-steady-state-cardio-with-hit-training-768x432.png 768w, https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/results-from-steady-state-cardio-with-hit-training-1536x864.png 1536w, https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/results-from-steady-state-cardio-with-hit-training-696x392.png 696w, https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/results-from-steady-state-cardio-with-hit-training-1068x601.png 1068w, https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/results-from-steady-state-cardio-with-hit-training.png 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-happened-when-my-clients-added-cardio\">What happened when my clients added cardio<\/h2>\n\n\n\n<p>My clients were already doing <a href=\"https:\/\/naturallyintense.net\/blog\/natural-bodybuilding\/train-3-days-straight-no-rest-days\/\">three short, extremely intense weight-training workouts per week<\/a>. They were getting stronger, building muscle, and improving their body composition. Then some would add a run, a stationary-bike ride, or an elliptical session on a day they otherwise would have used for recovery. Sometimes it was only around 20 minutes.<\/p>\n\n\n\n<p>I expected more exercise to produce more fat loss. Yet the clients adding these steady-state sessions often seemed to gain strength and muscle more slowly. Many didn&#8217;t become noticeably leaner faster, either.<\/p>\n\n\n\n<p>I want to be careful about what that means. These were observations from coaching, not a controlled experiment. Differences in diet, sleep, training history, and other habits could have contributed. I also saw plenty of people combine cardio and weights successfully. The useful lesson is to <strong>pay attention to the result of adding another session<\/strong>, rather than assuming that more exercise must improve it.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/cardiovascular-effects-of-high-intensity-training-1024x576.png\" alt=\"Author performing squats showing the cardiovascular effects of high intensity training\" class=\"wp-image-5513\" srcset=\"https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/cardiovascular-effects-of-high-intensity-training-1024x576.png 1024w, https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/cardiovascular-effects-of-high-intensity-training-300x169.png 300w, https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/cardiovascular-effects-of-high-intensity-training-768x432.png 768w, https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/cardiovascular-effects-of-high-intensity-training-1536x864.png 1536w, https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/cardiovascular-effects-of-high-intensity-training-696x392.png 696w, https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/cardiovascular-effects-of-high-intensity-training-1068x601.png 1068w, https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/cardiovascular-effects-of-high-intensity-training.png 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-why-my-weight-training-sessions-matter-to-this-question\">Why my weight-training sessions matter to this question<\/h2>\n\n\n\n<p>My <a href=\"https:\/\/www.naturallyintense.net\/\">Naturally Intense High Intensity Training<\/a> workouts usually last about 10 to 20 minutes, three days per week. The sessions are brief because the effort is high: very little rest between sets, challenging weights, and work taken to or near momentary muscular failure.<\/p>\n\n\n\n<p>After a hard set of squats, your heart is pounding and you&#8217;re breathing hard. That happens throughout much of one of our workouts. In my experience, training this way improved my work capacity and helped some clients perform better in activities outside the gym.<\/p>\n\n\n\n<p>Still, breathing hard during weights does not establish that a short lifting program provides every cardiovascular health benefit of a complete aerobic program. The <a href=\"https:\/\/www.heart.org\/en\/healthy-living\/exercise-and-physical-activity\/fitness-basics\/aha-recs-for-physical-activity-in-adults\">American Heart Association recommends<\/a> both aerobic activity and muscle-strengthening activity for general health. My question here is narrower: <strong>when maximum natural muscle growth is the priority, is an additional dedicated cardio workout helping this particular person?<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-does-the-research-say-about-cardio-and-lifting\">What does the research say about cardio and lifting?<\/h2>\n\n\n\n<p>The research does <strong>not<\/strong> show that cardio automatically destroys muscle gains. A <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/34757594\/\">systematic review and meta-analysis of concurrent aerobic and strength training<\/a> found no overall impairment in muscle hypertrophy or maximal strength compared with strength training alone, although explosive-strength gains were smaller in some comparisons. Another <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/36508686\/\">review examining continuous and interval endurance training<\/a> found no significant difference in whole-muscle growth in the comparisons it analyzed, while some muscle-fiber outcomes varied with the type of endurance work.<\/p>\n\n\n\n<p>Those findings matter. My coaching experience should not be presented as a universal scientific rule. It raises a practical question about a particular combination: very intense, low-volume lifting, extra steady-state sessions, and a lifter trying to maximize natural muscle development. Your response may differ.<\/p>\n\n\n\n<p>\u00a0<\/p>\n<\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/everyday-activity-vs-cardio-for-muscle-growth-1024x576.png\" alt=\"Graphic contrasting everyday activity vs dedicated steady-state cardio workout for muscle growth\" class=\"wp-image-5511\" srcset=\"https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/everyday-activity-vs-cardio-for-muscle-growth-1024x576.png 1024w, https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/everyday-activity-vs-cardio-for-muscle-growth-300x169.png 300w, https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/everyday-activity-vs-cardio-for-muscle-growth-768x432.png 768w, https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/everyday-activity-vs-cardio-for-muscle-growth-1536x864.png 1536w, https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/everyday-activity-vs-cardio-for-muscle-growth-696x392.png 696w, https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/everyday-activity-vs-cardio-for-muscle-growth-1068x601.png 1068w, https:\/\/naturallyintense.net\/blog\/wp-content\/uploads\/2026\/09\/everyday-activity-vs-cardio-for-muscle-growth.png 1672w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-being-active-is-not-the-same-as-adding-another-workout\">Being active is not the same as adding another workout<\/h2>\n\n\n\n<p>I practiced martial arts during some of my greatest periods of muscle growth. I&#8217;ve also coached people who walk, hike, do yoga, play recreational sports, and lead active lives. I did not consistently see the same pattern with those activities.<\/p>\n\n\n\n<p>That does not mean every walk is effortless or that every bike ride is too much. Intensity, duration, frequency, and the person&#8217;s recovery all matter. I am drawing a distinction between living an active life and repeatedly adding dedicated endurance sessions to an already demanding training schedule.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-should-you-cut-cardio-from-your-program\">Should you cut cardio from your program?<\/h2>\n\n\n\n<p>If you love running or cycling, train for an endurance event, or find that cardio improves your quality of life, keep your goal in view. If you lift and do cardio while getting stronger, recovering well, and moving toward the physique you want, there is no reason to change a program that&#8217;s working.<\/p>\n\n\n\n<p>If building muscle is your main goal <strong>and<\/strong> you feel worn down, your lifts have stalled, or your off days are filled with more workouts, try a measured experiment. Reduce some of the added cardio for a few weeks while keeping your lifting, food, and sleep as consistent as you reasonably can. Watch what happens to your performance, recovery, and physique. Then decide whether that cardio session was helping you reach <em>your<\/em> goal.<\/p>\n\n\n\n<p>After almost four decades of training myself and coaching others, that is the question I come back to: <strong>What is this exercise giving you, and what is it costing you?<\/strong><\/p>\n\n\n\n<p>If you want help building a training plan around your goals, <a href=\"https:\/\/naturallyintense.typeform.com\/applynow\">apply to train with me and the Naturally Intense team<\/a>.<\/p>\n\n\n\n<p><strong>Excelsior!<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00a0 For years, I assumed adding cardio to a weight-training program would help my clients get leaner faster. They would burn more calories, improve their endurance, and continue building muscle. It sounded perfectly logical. But after decades of coaching, I kept noticing a pattern I hadn&#8217;t expected. Clients who added dedicated, steady-state cardio on their [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":5515,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"footnotes":""},"categories":[1535],"tags":[],"yoast_head":"<title>Does Cardio Hurt Muscle Growth? What I Saw Training Natural Lifters<\/title>\n<meta name=\"description\" content=\"Does cardio hurt muscle growth? 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