Let's Run Some 200-Meter Sprints
by Beth Skwarecki on Vitals, shared by Beth Skwarecki from Lifehacker on (#58JHY)

Welcome back, runner friends! (Remember, we're all runners this month.) For this week's fitness challenge, we're skipping the pushups and hills and concentrating on the fun part of running: going fast, on a flat course, with the finish line in sight the whole time.