But it is still much harder to exercise when you're already overweight, and "high energy density" foods are quick to get us there – overeating by just 100 calories a day can lead to a weight increase of 10lb over a year. "Education must come first," says Wilkin. "Eating habits have to change to a much lower calorie intake, much lower body weight, and we would be fitter as a result because we would be able to do more physical activity." He would like to see higher levels of tax on calorie-dense food, similar to those levied on tobacco, which have proved effective in the campaign against smoking.

Walking helps to improve your heart health. Irish scientists have reported that walking is the best exercise for sedentary individuals, especially adults, to reduce the risk of heart and cardiovascular diseases (2).In another study published in the Journal of American Geriatrics Society, scientists confirmed that men and women of 65 years of age or older, who walked for at least 4 hours every week, were at less risk of cardiovascular disease (3). So, make sure to walk for 4 hours or more a week to keep heart disease, cardiovascular disease, and stroke at bay.
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