Everyone knows that physical exercise is necessary for a healthier life, but recommendations for how much exercise seem to vary from person to person. Sport medicine physician Dr. Jane Thornton outlines global exercise guidelines, while explaining why short bursts of physical activity are often enough to help us keep active.For transcripts of The Dose, please visit: lnk.to/dose-transcripts. Transcripts of each episode will be made available by the next workday. For more episodes of this podcast, click this link.