According to NHS physical activity guidelines, adults should aim for at least 150 minutes of moderate-intensity or 75 minutes of vigorous-intensity activity weekly, spread over four or more days, plus full-body strengthening twice weekly. However, with two-thirds of Brits overweight and healthy life expectancy dropping, questions arise about the guidelines' effectiveness.
The Core Problem: Adherence, Not Adequacy
Jack McNamara, clinical exercise physiologist at the University of East London, states the guidelines are evidence-based but notes that only one-third meet strengthening recommendations. The issue is not insufficiency but widespread non-compliance. Jordan Sahota, sports therapist, adds that the 19-64 age range is too broad, with guidelines feeling meagre for active youth and daunting for sedentary older adults.
Demographic Disparities
Sport England data shows lower activity levels among lower socio-economic groups, disabled individuals, older adults, and certain ethnicities. Access and opportunity are key barriers, making exercise unappealing or unachievable for many.
The Uncomfortable Truth About Exercise
Professor Emmanuel Stamatakis from the University of Sydney describes exercise as an "artificial behaviour" in a sedentary, screen-based world. Modern life has removed the need for movement, and exercise compensates for this loss. Combined with easy access to energy-dense foods, obesity rates rise.
Why Strength Training Matters
Strength training reduces premature death risk by 10-20% and maintains independence. Sahota sees clients aged 45+ who lose function without it. The guidelines now include strengthening, a valuable update.
Suggested Improvements
Sahota proposes a tiered system with progressive overload, while McNamara advocates sex-specific recommendations (women may need half the exercise volume) and greater emphasis on balance training for all ages. He also supports "exercise snacks" — brief vigorous bursts like stair climbing — to help time-pressed individuals.
Easy Ways to Move More
McNamara recommends two weekly strength sessions (20-30 minutes each) with compound exercises, supplemented by exercise snacks and moderate movement like walking or cycling for transport. Consistency over severity is key.
