activity was. the guidelines were formed by expert opinion. second, for many of us, we don’t even meet the minimal guidelines so the answer is easy: do more physical activity tomorrow than you are doing today.
the guidelines recommending 30 or more minutes on most days of the week (or 150 minutes per week) were introduced to make it easier to understand. the old guidelines recommended three one hour sessions in your target heart rate range three times per week. these old guidelines gave an all or none impression of activity and were also hard to follow for most people (how many of us know our target heart rate anyway?). it 