Value Village / Health

What are the common misunderstandings about how often and how much to do strength training?

This answer is a draft. It stays unpublished until legal review and source verification are complete.

The answerThe biggest misunderstanding is "strength training works better the more days you do it." Muscles grow stronger by resting after a load, and the same muscle group is generally described as needing 48–72 hours to recover. The MHLW's 2023 guide recommends strength training 2–3 days a week for both adults and older people: 10–15 reps per exercise, 2–3 sets, stopping "with a little left in reserve". For older people in particular, strength training matters for preventing falls and the need for long-term care.

In 2023, the Ministry of Health, Labour and Welfare (MHLW) guide stated "2–3 days a week" of strength training for all adults for the first time, and interest in Japan rose. Here we sort out ideas such as "every day is best", "it is dangerous for older people" and "more reps is better", using the guide and standard exercise physiology.

The 2023 guide

GroupFrequencyContentSource
Adults (18–64)2–3 days a weekExercises using the major muscle groups (squats, push-ups, core). 10–15 reps × 2–3 sets per exercisePhysical Activity and Exercise Guide 2023
Older people (65 and over)2–3 days a weekStrength training plus balance exercises (one-leg standing etc.). Do it safely: use a chair, keep a hand on the wallSame
RecoveryLeave 48–72 hours between sessions for the same muscle group (on consecutive days, split body parts)Exercise physiology
LoadStop with "2–3 more reps" in reserve. If your form breaks down, that is too manySame
BreathingDo not hold your breath (raises blood pressure). Breathe out on the effortSame
EquipmentYour own body weight is enough to start. Add dumbbells or resistance bands step by step—
Existing conditionsHigh blood pressure, heart disease, joint problems: ask your doctor. Stop if it hurts—
[Verify] Check the guide's strength-training text and the participation rate against MHLW materials. The recovery time and load guidelines are standard exercise-physiology statements.

Misunderstanding 1|Every day gives the best results

The same muscle group needs 48–72 hours to recover. 2–3 days a week, or split body parts.

Misunderstanding 2|More reps is better

10–15 reps × 2–3 sets, with something in reserve. Reps with broken form cause injury.

Misunderstanding 3|Strength training is dangerous for older people

The guide recommends 2–3 days a week for those 65 and over too. Use a chair or wall and combine it with balance exercises. Not training is the greater risk of falls and needing care.

Misunderstanding 4|If I walk, I don't need strength training

Walking is aerobic exercise; strength (especially upper body and core) is separate. The guide recommends both.

Misunderstanding 5|You need equipment and a gym

Squats, push-ups, planks, calf raises: your own body weight is enough to start. Combining these with rajio taisō (radio calisthenics) and stairs (see the articles on each) is what people in Japan actually do.

---

Sources

https://www.mhlw.go.jp/content/10904750/001171393.pdf

https://www.e-healthnet.mhlw.go.jp/information/exercise/s-05-003.html

https://locomo-joa.jp/

⚠️ Editorial note: the source URLs above were identified by search. Our working environment cannot reach go.jp domains, so the contents have not been checked against the text. Verify every source before publication and record who checked it and when.

About this article

What we share here are ideas and everyday practices passed down among people living in Japan, together with general information drawn from public sources. They are not official recommendations, and they are not professional instruction. Practices vary between households and regions.

This is general information. Results vary from person to person and depend on your own conditions and surroundings.

Please decide for yourself, using your own judgement, whether any of this suits your situation. We cannot accept responsibility for any damage, loss or injury arising from following this article.

This article is not meant to diagnose or manage any specific medical condition. If you are worried about your health, see a doctor rather than relying on your own judgement.

Sources

Tell us if this has changed

Approved contributions keep the contributor's name, shown in five languages.

Related questions

Other languages:日本語 / 简体中文 / 繁體中文 / 한국어

Value Village is not a government body. Always confirm procedures on the official site.
Written by Value Village from public sources. Nothing here is reproduced from another site.