Take on this 30 day challenge and work your way up to holding a plank for three minutes, building a solid core and strong mindset along the way. All for less than 3 minutes per day. Bookmark this page or save the image below and take on the challenge.
Simply complete the reps stated for each day. If you are unable to maintain a strict form, repeat the session tomorrow until you're able to perform the set with correct form for the allocated time.