This Full-Body Plank Workout Takes Just 5 Minutes to Do | SELF
5-Minute Daily Plank Workout
Julie on Twitter: "Plank with PERFORM! Take the 30 Day 5 min Plank Challenge and build up to a 5 minute plank! Who's in?! Show us your progress #ProfilePerform https://t.co/unqzOjRVxR" / Twitter
Killer Five Minute Plank Challenge! - NerdCore Performance
7 Day Plank Challenge - Just 5 Minutes A Day - YouTube
Amaechi Okobi starts a 5-minute plank challenge and people are going for it