Smart Aging

AI and healthy living, made simple for 55+

Start slow: how to ease into any new exercise

Cornerstone article

It’s never too late, but start small

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You can begin or restart physical activity at any age. [2] The biggest gain comes from going from no activity to about 60 minutes a week. [1] People who do the least benefit most from even modest increases. [9] The official advice is “start low and go slow.” [1]

Your first steps: what the guidelines suggest

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The starting amounts are expert guidance, not a proven formula. [1]

So what does “start low” look like? Walking (or other aerobic exercise). The U.S. Physical Activity Guidelines give this example for an inactive person: [1]

  1. “5 minutes of slow walking several times each day, 5 to 6 days a week.” [1, p. 74]
  2. Slowly build up to 10 minutes per walk, 3 times a day.
  3. After that, slowly pick up the pace.

Strength. The guidelines say you can start just 1 day a week at a light or moderate effort, then go to 2 days a week or more. [1, p. 74] NIA says beginners can start without weights or bands, and advises against working the same muscle group two days in a row. [3]

Aerobic vs. strength. These two build up differently. The guidelines’ beginner walking example uses 5 to 6 days a week. [1, p. 74] Their strength plan starts at 1 day a week and builds to 2 or more. [1, p. 74] Strength also needs rest days between sessions. [3]

How hard is “moderate”? The guidelines and NIA describe a talk test: you can talk, but not sing. If you can only say a few words before taking a breath, that’s vigorous. [1][3]

How to build up

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The guidelines describe moving up gradually as you adapt. [1]

Add time and days first. The guidelines say inactive people should slowly add to how often and how long they move, then raise the effort later. [1]

Give each step time. The guidelines say older adults “appear to require more time to adapt to a new level of activity, in the range of 2 to 4 weeks.” [1]

Keep size in mind. What matters is the size of the jump compared with what you already do. Adding 20 minutes is a 10% jump if you already do 200 minutes a week, but a 50% jump if you do 40. [1]

Easing in is the start, not the finish

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Starting slow is how you begin. It is not where you stay. The guidelines’ walking plan says “the walking speed could be increased slowly” once you’ve built up your time. [1, p. 74] The guidelines’ goal is to build up gradually to at least 150 minutes a week of moderate effort, which you can check with the talk test above. [1][3]

Why easy beats hard

Limited evidence (one experiment [8] and one review that pulled together 33 studies [7])

Why not just push harder from day one? In an experiment with 379 inactive adults, people told to walk harder stuck with their plan less and did less exercise overall. People told to walk more days did more exercise. [8]

Feeling good matters, too. A review of 33 studies found that pleasure drops mainly once effort passes the point where breathing gets noticeably harder. Below that point, most people feel good. [7] Building up slowly can also help build “confidence, motivation, and a regular routine.” [3]

Sore vs. hurt

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Even when you build up slowly, you may feel it the next day. Some muscle soreness a day or two later is common, especially with new kinds of activity. Moves where muscles work while lengthening tend to cause more. [6] A review of past studies, aimed mainly at athletes, suggests bringing in new moves over 1 to 2 weeks, and going lighter for a day or two after a very sore session. [6]

Overdoing strength exercises “can cause exhaustion, sore joints, and muscle pain or injury.” [3]

Bill’s rule is about ordinary muscle stiffness that loosens up as you warm up. It doesn’t apply to chest pain or pressure, dizziness, nausea, joint pain, or trouble catching your breath. If you have any of those, stop right away, even if it eases, and see the Stop signs below. (Our safety note.)

Do you need a doctor first?

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Healthy older adults who plan gradual increases generally don’t need to see a doctor first. [1][3] But check with your health care professional if: [4]

Stop signs

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Stop exercising if you have pain, become dizzy, or feel short of breath. [4] Breathing harder is normal; not being able to catch your breath is not. (Our safety note.) Aerobic activity “should not cause dizziness, chest pain or pressure, or nausea.” [3]

Call 911 for heart attack warning signs: [5]

  • Chest discomfort (pressure, squeezing, fullness, or pain)
  • Pain or discomfort in one or both arms, the back, neck, jaw, or stomach
  • Shortness of breath
  • Cold sweat, nausea, a fast or irregular heartbeat, unusual tiredness, or lightheadedness

Chest pain or discomfort is the most common sign in women too, but women may also have other symptoms, such as shortness of breath, nausea, or unusual tiredness. [5]

After a break

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After a break for illness or travel, NIA advises that you “work back up gradually.” [3]

What we don’t know yet

We didn’t find any studies that tested starting amounts or how fast to build up in people 55 and older. So the advice here is expert guidance, plus Bill’s own experience, which is not research.

This is general information, not medical advice. If you have a health condition, symptoms such as chest pain or dizziness, or any concerns, check with your doctor before starting a new exercise.

Sources

  1. U.S. Department of Health and Human Services, Physical Activity Guidelines for Americans, 2nd ed. (2018). https://odphp.health.gov/sites/default/files/2019-09/Physical_Activity_Guidelines_2nd_edition.pdf (O1)
  2. HHS, Physical Activity Guidelines for Americans Midcourse Report: Implementation Strategies for Older Adults (2023). https://odphp.health.gov/sites/default/files/2023-08/PAG_MidcourseReport_508c_08-10.pdf (O2)
  3. National Institute on Aging, Exercise and Physical Activity booklet (2025). https://order.nia.nih.gov/sites/default/files/2025-04/exercise-and-older-adults-nia_0.pdf (O3)
  4. NIDDK, “Health Tips for Older Adults.” https://www.niddk.nih.gov/health-information/weight-management/healthy-eating-physical-activity-for-life/health-tips-for-older-adults (O4)
  5. American Heart Association, “Warning Signs of a Heart Attack.” https://www.heart.org/en/health-topics/heart-attack/warning-signs-of-a-heart-attack (O6)
  6. Cheung K, Hume P, Maxwell L. Delayed onset muscle soreness: treatment strategies and performance factors. Sports Med. 2003;33(2):145-64. PMID 12617692. DOI 10.2165/00007256-200333020-00005. (P10)
  7. Ekkekakis P, Parfitt G, Petruzzello SJ. The pleasure and displeasure people feel when they exercise at different intensities. Sports Med. 2011;41(8):641-71. PMID 21780850. DOI 10.2165/11590680-000000000-00000. (P11)
  8. Perri MG, et al. Adherence to exercise prescriptions: effects of prescribing moderate versus higher levels of intensity and frequency. Health Psychol. 2002;21(5):452-8. PMID 12211512. DOI 10.1037/0278-6133.21.5.452. (P12)
  9. Piercy KL, et al. The Physical Activity Guidelines for Americans. JAMA. 2018;320(19):2020-2028. PMID 30418471. DOI 10.1001/jama.2018.14854. (P1)

This is general information, not medical, legal, or financial advice. Check with your doctor before starting a new exercise, diet, or supplement.