Strength Training on Couch to 5K Rest Days: What NHS and CDC Say

Yes, the official guidelines allow it. The NHS and the CDC both recommend muscle-strengthening activity on at least 2 days a week, and the NHS says you can do it on the same or different days as your aerobic exercise. Neither source, however, says what to do on a Couch to 5K rest day specifically, so treat a strength session as a choice you make, not a plan instruction.

That distinction matters because the NHS Couch to 5K plan says to aim for a rest day between each run. Rest days "are just as important as the runs themselves". The plan itself contains no strength sessions.

1. What the guidelines say about strength

The NHS says adults should do strengthening activities that work all the major muscle groups (legs, hips, back, abdomen, chest, shoulders and arms) on at least 2 days a week. The CDC says the same: adults need at least 2 days of muscle-strengthening activity each week, covering the same muscle groups.

The NHS adds that you can do strengthening on the same or different days as aerobic activity, "whatever's best for you". It also says strengthening is not always aerobic, so it does not count toward your 150 minutes of aerobic activity.

For a beginner, the NHS says to do the exercises to the point where you need a short rest before repeating them. Its examples include yoga, pilates, tai chi, lifting weights, resistance bands, body-weight exercises such as push-ups and sit-ups, and heavy gardening.

2. What the Couch to 5K plan asks of you

The plan has you run 3 times a week for 9 weeks, alternating between walking and running, with a rest day between runs. Each run has a 5-minute warm-up walk and a 5-minute cool-down walk. You can take longer than 9 weeks, and the NHS says it is fine to repeat a run or a week.

One honest limit: the plan does not mention strength training, so nothing official says a gym session is or is not good for a rest day. The NHS also says to speak to a GP first if you are worried about your health before starting a plan like this.

3. Do the running minutes count toward the weekly target?

The NHS lists running as a vigorous activity, and says 75 minutes of vigorous activity a week gives similar benefits to 150 minutes of moderate. The CDC uses the same 75-minute figure. Adding up the running portions of the plan (warm-up and cool-down walks excluded) gives these weekly totals:

The weekly total first reaches 75 minutes in week 7 and passes it in weeks 8 and 9. Before then, running alone falls short of the vigorous-activity target, and neither source says how to fill the gap. Both do allow moderate activity such as brisk walking to count toward the 150-minute target.

Running does not satisfy the strength guideline. That needs separate activity on 2 days a week, which is why the question comes up at all.

4. What a week could look like

This is a schedule built from the rules above, not an official one. It keeps a non-run day between every run and puts the 2 strengthening days on those in-between days:

The NHS plan asks for a rest day between each run, and this layout keeps a non-run day between every run. If a strength session leaves you too sore or tired to run well, you can drop it or move it to the same day as a run. The NHS allows either, and its Couch to 5K page says to listen to your body and stop if something does not feel right. For why the spacing matters, see why rest days matter when you are learning to run.

5. Key takeaways

• Both the NHS and CDC recommend strengthening on at least 2 days a week for adults.
• The NHS says strengthening can be on the same or different days as aerobic exercise.
• The Couch to 5K plan has no strength sessions and says to rest between runs.
• Running minutes reach 75 a week only in week 7 of the plan.
• Strengthening does not count toward your aerobic minutes.