I Tried Doing Planks for 5 Minutes Every Day for a Month
5 MIN PLANK CHALLENGE (NO EQUIPMENT BODYWEIGHT WORKOUT!) - YouTube
Subhasree Ray on Twitter: "5-minute plank. In addition to the core, this exercise helps in strengthening the muscles in your back, chest, arms, thighs, and shoulders. Implement in phases. https://t.co/qURugpGAvT" / Twitter
This Full-Body Plank Workout Takes Just 5 Minutes to Do | SELF
5 Minute Plank Workout | Plank workout, 5 min plank workout, 5 min workout
30 Days to a 5 Minute Plank & Rock-Hard Abs | Physical Living | Health-First Fitness