Mary Jo Foley has covered the tech industry for 30 years for a variety of publications, including ZDNet, eWeek and Baseline. She is the author of Microsoft 2.0: How Microsoft plans to stay relevant in the post-Gates era (John Wiley &. Updated, Oct. 24, 2014 | For a greater challenge, see “The Advanced 7-Minute Workout.” And download our new, free 7-Minute Workout App for your phone, tablet or other device….