From arms to abs, press-ups to tricep dips, ... How many times have you done the 60-day challenge at Xtend? This is our 4th year running the 60- day challenge.

Download the 30-Day Abs Challenge PDF. Kneeling Pushup. How to: Begin in a knee plank with tailbone tucked under, index fingers pointing straight forward and fingers spread wide, feet together and ...

14-day at-home core-strengthening challenge Day 1: A 10-Minute Oblique Workout. Target your oblique muscles with this quick workout led by Sydney Lotuaco.

As the 30-day ab challenge goes on, the exercises will become harder. Hint: Planks turn into pikes and crunches turn into flutter kicks. Complete 8-12 reps of each exercise or perform them for 30 ...

Last month, she created the "30 Day Ab Challenge for those who need some motivation," and as of Tuesday, it has attracted more than 2.6 million people on Facebook. "It's not really my own.