Men around the UK are being encouraged to work out more.
The Men's Health Forum has picked on men over the age of 35 and those from ethnic backgrounds as the main offenders for not getting enough exercise.
In the run-up to National Men's Health Week (June 14th - 20th), the group is urging men and boys to find new ways of exercising.
Dr Ian Banks, president of Men's Health Forum, commented: "After the age of about 35, there's a sharp decline in the amount of physical activity men undertake and most cite pressure of work, stress, divorce and children as the causes.
Men's Health Week 2010 will highlight the many ways of staying healthy, even for people who claim to be 'too busy to exercise'.
According to the forum, men from Indian, Pakistani, Bangladeshi and Chinese backgrounds are less likely than the average male population to meet minimum recommendations for physical activity.
The government recommends at least 20 minutes of moderate exercise five times a week.
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