Let's face it: Many people will need some motivation to shed those holiday pounds. Thankfully, an update to the Nike+ Running app for iOS is here to get folks moving. The fitness tool now includes a Nike+ Coach mode that delivers training programs based on both ambition and skill level; athletes can gently work up to a 5K or go all-out with marathon training. Should they start slacking, the app can also send run reminders and offer tips. We can't promise that Nike's coaching will make up for any turkey overdoses this year, but hey, the app is free -- it won't hurt to give the new feature a spin.