Start a new healthy habit with this 30-day long abs challenge program, which provides you with workouts and exercises to strengthen your core for a month.

Keltie O'Connor followed a 30-day ab challenge to see whether she could build herself a strong core, and to prove that a six-pack isn't always 'healthy'.

Every day for the next month, we challenge you to strengthen and sculpt your core in a new way. Follow our 30-day ab challenge to get an ab exercise each day.

It's never too late to get started on this 30-day cleaning challenge and get your home in tip-top shape; just start today, and follow the schedule for the next 30 days! We've been carefully ...

How to complete the 30-day ab challenge The following month-long program is progressive, meaning it starts with basic but fundamental concepts and then gets more advanced as the days pass.

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.

Join the Women's Health 30-Day Workout Challenge to get stronger with customizable daily bodyweight and dumbbell workout plans, perfect for all fitness levels.

Robyn Mendenhall Gardner was amazed when what started off as a monthlong ab workout challenge between friends and family caught fire on the Web. More than 2.7 million people have signed on to the ...

Add some fire to your month with this 30-day plank challenge, designed to strengthen your core — and put your upper body to work too.