I know this is terribly late on the blog, but I have been organizing a plank challenge on Instagram (@eightsnweights) all April. If you are trying to increase your core strength and build those abs, this challenge is for you. It is not too late to start as you can do this on your own schedule.
When we started, it was much easier. But as we go towards the 2-minute mark, it is getting more and more intense. Look at the schedule above and get to it :)
Cheers Eights & Weights!