To dedicated runners, running outside gets all the glory. Some purists even eschew headphones (and shoes!). But when talking about whether treadmill running is “the same” as running outdoors, it helps to pinpoint what sort of sameness matters to you. MORE How to Burn Off 24 Holiday Foods Your Lungs: A User’s Manual Wal-Mart Changes … Continue reading Is Running on a Treadmill as Good as Running Outside?