Physical activity can help people to prevent and manage over 20 chronic health conditions (Start active, stay active Department of Health). The benefits of physical activity vary across ages and include improvements to physical and mental development and functioning. (Start active, stay active: infographics on physical activity Department of Health).
Physical inactivity costs the NHS in the UK around £1 billion per year (Making the case for public health interventions The King's Fund; The economic burden of ill health due to diet, physical inactivity, smoking, alcohol and obesity in the UK: an update to 2006-07 NHS costs Scarborough et al. 2011). lncluding costs to wider society, this rises to around £7.4 billion a year (Everybody active, every day: an evidence based approach to physical activity Public Health England).
In 2015, 34% of men and 42% of women reported that they did not meet UK guidelines on physical activity, and the number of people meeting the recommended levels decreased with age (Health Survey for England – 2016 NHS Digital). In 2015, only 23% of boys and 20% of girls aged 5 to 15, and in 2012 only 10% of boys and 9% of girls aged 2 to 4 met the UK Chief Medical Officer's guidelines on physical activity for their age group (Health Survey for England, 2016: children's health NHS Digital; Health Survey for England 2015: children's physical activity NHS Digital,).
The environment can influence people's ability to be active (Changing the environment to promote health-enhancing physical activity Foster and Hillsdon 2004). The design and layout of towns and cities can enable and encourage walking and cycling, and using public transport may also mean people build physical activity into their daily lives (Incidental physical activity in Melbourne, Australia: health and economic impacts of mode of transport and suburban location Beavis and Moodie 2014).
For people with limited mobility, the environment can make it particularly difficult to be active. For example, they may not have easy access to public transport, or may find it difficult to cross roads if the crossings are not accessible.
The government's Sporting Future sets out a strategy for a healthy nation based on 5 outcomes, including physical and mental wellbeing. The government's Cycling and Walking Investment Strategy aims to make cycling and walking the natural choices for shorter journeys, or as part of a longer journey. Objectives for these policies include:
increasing the proportion of the population meeting the physical activity guidelines
decreasing the proportion doing less than 30 minutes of physical activity a week
increasing cycling and walking activity
decreasing fatalities and serious injuries in cyclists.
Supporting people of all ages and abilities to be more physically active can help local authorities meet their public health responsibilities. Specifically, it will affect indicators identified in the Public Health Outcomes Framework 2016 to 2019 and the NHS Outcomes Framework 2016 to 2017.
You can also see this guideline in the NICE Pathway on physical activity.
To find out what NICE has said on topics related to this guideline, see our web page on physical activity.
 In the survey anyone over 16 was defined as an adult.
 For children aged 5 to 15, figures exclude physical activity done during school lessons. When this is included, 24% of boys and 18% of girls who had attended school in the past week met the UK Chief Medical Officers' guidelines on physical activity for their age group.
 For both reports, data was collected from parental report for children aged 2 to 12. For 13 to 15 year olds, data was self-reported.