Getting active again
Getting active again after treatment rebuilds strength, energy and mood. This topic explains when and how to start, how much activity is recommended and how to stay safe.

01Short answer
02Simple explanation
Activity reduces fatigue and improves strength and mood.
The rule: start slowly, build up gradually.
The goal: 150 minutes a week and 2 strength sessions.
Any activity is better than none.
If you have problems: a physiotherapist.
03Scientific explanation
Recommendations: the WHO recommends that adults do 150–300 minutes of moderate or 75–150 minutes of vigorous activity a week, plus strength exercises on at least 2 days; children and teenagers should average 60 minutes a day.
Survivors: the ACS recommends that survivors return to normal activity as soon as possible after treatment and avoid long periods of sitting.
Benefits: the ACS and WCRF note that physical activity reduces fatigue, anxiety and depression and improves quality of life and physical strength.
Safety: the COG recommends that survivors with heart, lung or bone late effects talk to their doctor before starting a new intensive sport.
04What happens in the body?
Why be active?
Activity strengthens muscles, bones and the heart, reduces fatigue, and improves sleep and mood.

When can I start?
Often straight after treatment ends, with light activity. Ask your doctor about timing and any limits.
How do I start?
Begin with 5–10 minutes of walking a day. Add a few minutes each week. A pace at which you can talk but not sing is moderate intensity.

Strength and flexibility
Add gentle strength exercises twice a week (using your body weight or a resistance band) and stretching. A physiotherapist can teach good technique.
Children
Play, cycling, swimming and dancing — the best activity for a child is the one they enjoy. Agree the return to school sport with the doctor.
When to call your doctor
Worrying signs — fever, bleeding, new pain, breathlessness — should be reported to your doctor between visits too. Getting in touch early is always better than waiting.
05The path back to activity
Steps.







06An example activity plan (simplified)
| Stage | What to do | How much |
|---|---|---|
| Start | Light walking | 5–10 minutes a day |
| Build up | Longer walks | A few minutes more each week |
| Strength | Gentle strength exercises | Twice a week |
| Goal | Moderate activity | 150 minutes a week |
* Make your own plan with your doctor or physiotherapist.
07Key terms
- Moderate intensity
- A pace at which you can talk but not sing.
- Strength exercise
- Movements that build muscle.
- Stamina
- The ability to keep moving for a long time.
- Stretching
- Gentle movements for flexibility.
- Physiotherapist
- A specialist in movement and strength.
- Sedentary lifestyle
- Sitting for long periods.
08Key points
- Start slowly.
- Build up gradually.
- Add strength exercises.
- Avoid long periods of sitting.
- Stop if warning signs appear.
- Make a plan with your doctor.
09Frequently asked questions
I feel tired — should I still be active?
Yes, gently; activity often reduces tiredness.
Can I go to the gym?
Often yes; ask your doctor about your immunity and any central line.
Can I swim?
If you have no central line and your doctor agrees, usually yes.
How fast should I reach the goal?
Do not rush; weeks and months is normal.
Does this information replace medical advice?
No. This is general education; only your treating doctor can assess your situation.
10Questions for your doctor
Take these questions to your appointment. The ones you save are collected on the “My questions” page and stay on this device only.
I feel tired — should I still be active?
Can I go to the gym?
Can I swim?
How fast should I reach the goal?
Does this information replace medical advice?
12Sources
- American Cancer Society. Nutrition and Physical Activity During and After Cancer Treatment
- World Health Organization. Physical activity
- NHS. Exercise
- World Cancer Research Fund. Cancer Prevention Recommendations
- Children's Oncology Group. Long-Term Follow-Up Guidelines for Survivors of Childhood, Adolescent and Young Adult Cancers
- National Cancer Institute (NCI). Follow-Up Medical Care
- National Cancer Institute (NCI). Cancer Survivorship
- Cancer.Net (ASCO). Follow-Up Care After Cancer Treatment
- Leukemia & Lymphoma Society (LLS). Long-Term and Late Effects of Treatment
- National Cancer Institute. Facing Forward: Life After Cancer Treatment