It will come as no surprise that science suggests you should be exercising . Especially when it comes to heart health , doctors and researchers have observed for decades that getting up and moving—whether it’s going for a run or a swim or even a brisk walk to the grocery store—is linked to better outcomes. However, the latest research suggests that this doesn’t need to mean spending hours each week panting at the gym. Studies drawing on data from people wearing activity monitors on their wrists