30 Day Plank Challenge Plank Plank Plank Plank Plank Plank Plank Plank Plank Plank Plank Plank Plank Plank Plank Plank Plank Plank Plank Plank Plank Plank Plank Plank Day 1 Day 2 Day 3 Day 4 Day 5 REST DAY Day 6 Day 7 Day 8 Day 9 Day 10 REST DAY Day 11 Day 12 Day 13 Day 14 Day 15 REST DAY Day 16 Day 17 Day 18 Day 19 Day 20 REST DAY Day 21 Day 22 Day 23 Day 24 Day 25 REST DAY Day 30 REST DAY Day 26 Day 27 Day 28 Day 29 Brought to you by www.changeinseconds.com 20 SECONDS 20 SECONDS 30 SECONDS 30 SECONDS 40 SECONDS 40 SECONDS 50 SECONDS 50 SECONDS 1 MINUTE 1 MINUTE 1.5 MINUTE 1.5 MINUTE 2 MINUTE 2 MINUTE 2.5 MINUTE 2.5 MINUTE 3 MINUTE 3 MINUTE 3.5 MINUTE 3.5 MINUTE 4 MINUTE 4 MINUTE 4.5 MINUTE 4.5 MINUTE