Physical Activity Best Practice Guidance Physical activity in teenagers and young adults with cancer The aim of this best practice guidance is to raise awareness amongst professionals working with young people with cancer of the importance of physical activity and exercise in patients and the need to provide advice and guidance on exercise. The document is not intended to provide prescriptive advice for particular centres or individual cases, but rather to promote physical activity as an aspect of cancer care for young people that needs to be included in service delivery. The guidance includes possible ways to achieve this. Evidence base There is a large evidence base supporting physical activity in adult cancer patients, including improvement in physical functioning, role function, social functioning, fatigue, mood and overall quality of life. There is also a growing evidence base concerning teenagers and young adults with cancer demonstrating that young people will engage in exercise during treatment and that it can have positive psychological effects. Authors: Nicola Chesman, Laura Jeffrey, David Wright in association with the Teenagers and Young Adults with Cancer (TYAC) Service Development Group. If you are a professional working with young people with cancer and would like to access a copy of this best practice guidance in full, you can do so by joining TYAC as a member.