Current exercise guidelines recommend 150 minutes of weekly moderate-to-vigorous intensity activity. However, light physical activity (casual walking, pushing a grocery cart, light housework, etc.) of at least 229 minutes/week may reduce new disability by up to 49%. This was found in a group of 1680 adults 49 and older who had knee osteoarthritis or risk factors for it. These findings were independent of more vigorous activity levels.
PositiveTip: Keep up the light and vigorous activities. The benefits are very real!