COMING SOON: The Automated Ball-Strike Challenge System (ABS) presented by @TMobile will be used during Spring Training games for the first time ever. ABS has been tested in the minor leagues since ...

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'.

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.

More than 2.7 million people have signed on to the challenge. The Montana mother of eight told Shots she came across a 30-day ab fitness plan online and, after having a tough time finishing it, turned ...

The Ultimate Abs Challenge is a seven-day workout plan that alternates 20ish-minute core-focused strength training sessions with 30- to 45-minute cardio sessions or active rest days (your choice).