--- title: "Meaning & Key Takeaway of: Muscle cells strengthen in response to…" description: "\"Muscle cells strengthen in response to intense exercise - whether you're 18 or 88. But the intensity is what's lacking in most people's workouts. And t..." image: "https://sms4smile.com/quotes/i/6b7/jack-lalanne-2498_advice_muscle-cells-strengthen-in-response-to-i_1540508.png" --- # Muscle cells strengthen in response to intense exercise… ![“Muscle cells strengthen in response to intense exercise - whether you're 18 or 88. But the intensity is what's lacking in most people's workouts. And there are doctors who'll give you the advice, "Well, don't push it."” quote by Jack LaLanne](https://sms4smile.com/quotes/i/6b7/jack-lalanne-2498_advice_muscle-cells-strengthen-in-response-to-i_1540508.png) [Download](https://sms4smile.com/quotes/i/6b7/jack-lalanne-2498_advice_muscle-cells-strengthen-in-response-to-i_1540508.png) [Open image](https://sms4smile.com/quotes/i/6b7/jack-lalanne-2498_advice_muscle-cells-strengthen-in-response-to-i_1540508.png) > “Muscle cells strengthen in response to intense exercise - whether you're 18 or 88. But the intensity is what's lacking in most people's workouts. And there are doctors who'll give you the advice, "Well, don't push it."” [Jack LaLanne](https://sms4smile.com/quotes/author/jack-lalanne/) ## About This Quote This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation. Intense exercise triggers muscle growth at any age, but most people avoid sufficient intensity. **In simple terms:** High intensity training builds muscle for young and old. Key Takeaway Increase workout intensity safely. Themes fitness aging muscle growth Mood motivational pragmatic Type advice instructional When to use this quote - personal training - senior fitness - rehab - gym routines Key Concepts physiology training adaptation Questions to Reflect On - How can you safely raise intensity? - What limits your effort? A Different Perspective Intensity may increase injury risk without proper form. ★ ★ ★ ★ ★ No ratings yet [Advice](https://sms4smile.com/quotes/about/advice/) [Cells](https://sms4smile.com/quotes/about/cells/) [Cells Strengthen](https://sms4smile.com/quotes/about/cells-strengthen-5736726/) [Doctor who](https://sms4smile.com/quotes/about/doctor-who/) [Doctors](https://sms4smile.com/quotes/about/doctors/) [Exercise](https://sms4smile.com/quotes/about/exercise/) [Fitness](https://sms4smile.com/quotes/about/fitness/) [Giving](https://sms4smile.com/quotes/about/giving/) [Intense](https://sms4smile.com/quotes/about/intense/) [Intense Exercise](https://sms4smile.com/quotes/about/intense-exercise-829877/) [Intensity](https://sms4smile.com/quotes/about/intensity/) [Lacking](https://sms4smile.com/quotes/about/lacking/) [Muscle](https://sms4smile.com/quotes/about/muscle/) [Muscle Cells](https://sms4smile.com/quotes/about/muscle-cells-5736727/) [Muscles](https://sms4smile.com/quotes/about/muscles/) [People](https://sms4smile.com/quotes/about/people/) [Response](https://sms4smile.com/quotes/about/response/) [Wells](https://sms4smile.com/quotes/about/wells/) [Workout](https://sms4smile.com/quotes/about/workout/) ## Related quotes > [I went to boot camp in 2010 and did intense exercise training.](https://sms4smile.com/quotes/kerry-katona/i-went-to-boot-camp-in-2010-and-did-intense-exercise-training/) [Kerry Katona](https://sms4smile.com/quotes/author/kerry-katona/) > [“A year of intense exercise and watching what you eat will likely change the trajectory of your life physically. You will melt away fat,…](https://sms4smile.com/quotes/dave-ramsey/a-year-of-intense-exercise-and-watching-what-you-eat-will-likely/) [Dave Ramsey](https://sms4smile.com/quotes/author/dave-ramsey/) > [The American College of Sports Medicine found that the productivity of people after exercise was an average of 65 percent higher than those who…](https://sms4smile.com/quotes/chalene-johnson/the-american-college-of-sports-medicine-found-that-the-productivity/) [Chalene Johnson](https://sms4smile.com/quotes/author/chalene-johnson/) > [“BOP2: Do a minimum of 20 mins moderate to intense exercise, every other day.”](https://sms4smile.com/quotes/anonymous/bop2-do-a-minimum-of-20-mins-moderate-to-intense-exercise-every-other/) [Anonymous](https://sms4smile.com/quotes/author/anonymous/) > [My profession requires me to follow a dedicated and intense exercise regime.](https://sms4smile.com/quotes/lara-dutta/my-profession-requires-me-to-follow-a-dedicated-and-intense-exercise/) [Lara Dutta](https://sms4smile.com/quotes/author/lara-dutta/) > [“Not only does a regular intense exercise programme elevate spirits, it enables the Type O to maintain weight control, emotional balance and a strong…](https://sms4smile.com/quotes/peter-j-d-adamo/not-only-does-a-regular-intense-exercise-programme-elevate-spirits-it/) [Peter J. D'Adamo](https://sms4smile.com/quotes/author/peter-j-d-adamo/) > [I had to work exceptionally hard to put on muscle.](https://sms4smile.com/quotes/scott-mctominay/i-had-to-work-exceptionally-hard-to-put-on-muscle/) [Scott McTominay](https://sms4smile.com/quotes/author/scott-mctominay/) > [My sole goal when getting ready for a contest was not building a lot of size, although when I was coming up pure muscle…](https://sms4smile.com/quotes/dorian-yates/my-sole-goal-when-getting-ready-for-a-contest-was-not-building-a-lot/) [Dorian Yates](https://sms4smile.com/quotes/author/dorian-yates/) > [I've been putting more muscle on in training to make sure I'm getting bigger so when the opponents come, I know that I'm strong…](https://sms4smile.com/quotes/callum-hudson-odoi/i-ve-been-putting-more-muscle-on-in-training-to-make-sure-i-m-getting/) [Callum Hudson-Odoi](https://sms4smile.com/quotes/author/callum-hudson-odoi/) > [If you do not use a muscle or any part of the body, it tends to become atrophic. So is the case with the…](https://sms4smile.com/quotes/shakuntala-devi/if-you-do-not-use-a-muscle-or-any-part-of-the-body-it-tends-to-become/) [Shakuntala Devi](https://sms4smile.com/quotes/author/shakuntala-devi/) > [I kind of stumbled into this. I used to do karate and then I started reading muscle magazines. Eventually, I began training and competing.](https://sms4smile.com/quotes/dorian-yates/i-kind-of-stumbled-into-this-i-used-to-do-karate-and-then-i-started/) [Dorian Yates](https://sms4smile.com/quotes/author/dorian-yates/) > [What is wrong with looking muscular? Muscles are beautiful. Strength is beautiful. Muscle tissue is beautiful. It is metabolically, medically, and philosophically beautiful. Muscles…](https://sms4smile.com/quotes/natalie-angier/what-is-wrong-with-looking-muscular-muscles-are-beautiful-strength-is/) [Natalie Angier](https://sms4smile.com/quotes/author/natalie-angier/) > [Fly flight is just a great phenomenon to study. It has everything - from the most sophisticated sensory biology; really, really interesting physics; really…](https://sms4smile.com/quotes/michael-dickinson/fly-flight-is-just-a-great-phenomenon-to-study-it-has-everything-from/) [Michael Dickinson](https://sms4smile.com/quotes/author/michael-dickinson/) > [What I look for in a script is something that challenges me, something that breaks new ground, something that allows me to flex my…](https://sms4smile.com/quotes/michael-bay/what-i-look-for-in-a-script-is-something-that-challenges-me-something/) [Michael Bay](https://sms4smile.com/quotes/author/michael-bay/) > [“They say your muscles have memory. Once you've trained your arms to swing a tennis racket or your legs to ride a bike, you…](https://sms4smile.com/quotes/robin-brande/they-say-your-muscles-have-memory-once-you-ve-trained-your-arms-to/) [Robin Brande](https://sms4smile.com/quotes/author/robin-brande/) ## More by Jack LaLanne > [You've got to exercise. Your health account, your bank account, they're the same thing. The more you put in, the more you can take…](https://sms4smile.com/quotes/jack-lalanne/you-ve-got-to-exercise-your-health-account-your-bank-account-they-re/) [Jack LaLanne](https://sms4smile.com/quotes/author/jack-lalanne/) > [Forget about what you used to do. Don't make those same mistakes again. Everybody says, "Oh the good old days" - the good old…](https://sms4smile.com/quotes/jack-lalanne/forget-about-what-you-used-to-do-don-t-make-those-same-mistakes-again/) [Jack LaLanne](https://sms4smile.com/quotes/author/jack-lalanne/) > [Thoughts are things. Negativity is what kills you... It's tough to do, but you've got to work at living, you know? 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And when you go on a low-carb/high-protein diet, your brain is using low-octane fuel. You'll be…](https://sms4smile.com/quotes/jack-lalanne/the-brain-s-preferred-source-of-fuel-is-glucose-carbohydrates-and/) [Jack LaLanne](https://sms4smile.com/quotes/author/jack-lalanne/) > [You can't separate the mind and body. It's impossible.](https://sms4smile.com/quotes/jack-lalanne/you-can-t-separate-the-mind-and-body-it-s-impossible/) [Jack LaLanne](https://sms4smile.com/quotes/author/jack-lalanne/) > [What you need to do is get that tape measure out, and start measuring that gut. Then you start working out and you start…](https://sms4smile.com/quotes/jack-lalanne/what-you-need-to-do-is-get-that-tape-measure-out-and-start-measuring/) [Jack LaLanne](https://sms4smile.com/quotes/author/jack-lalanne/) > [The most important thing in your life is your health and your body. You can have all the education and you can have millions…](https://sms4smile.com/quotes/jack-lalanne/the-most-important-thing-in-your-life-is-your-health-and-your-body/) [Jack LaLanne](https://sms4smile.com/quotes/author/jack-lalanne/) > [I only eat fish - no chicken, no turkey, just fish. I get all my protein from fish and egg whites.](https://sms4smile.com/quotes/jack-lalanne/i-only-eat-fish-no-chicken-no-turkey-just-fish-i-get-all-my-protein/) [Jack LaLanne](https://sms4smile.com/quotes/author/jack-lalanne/) > [That is the beautiful part about weights: even if you are 100 year old, you can lift something. Maybe it's only a half a…](https://sms4smile.com/quotes/jack-lalanne/that-is-the-beautiful-part-about-weights-even-if-you-are-100-year-old/) [Jack LaLanne](https://sms4smile.com/quotes/author/jack-lalanne/) > [I was going to be a singer. If I hadn't been in my profession, I was going to be an Opera singer. 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